CN104878300B - Injection shaping high tenacity tool steel - Google Patents
Injection shaping high tenacity tool steel Download PDFInfo
- Publication number
- CN104878300B CN104878300B CN201510249127.1A CN201510249127A CN104878300B CN 104878300 B CN104878300 B CN 104878300B CN 201510249127 A CN201510249127 A CN 201510249127A CN 104878300 B CN104878300 B CN 104878300B
- Authority
- CN
- China
- Prior art keywords
- carbide
- tool steel
- steel
- high tenacity
- injection shaping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910001315 Tool steel Inorganic materials 0.000 title claims abstract description 46
- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 238000007493 shaping process Methods 0.000 title claims abstract description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 9
- 239000000470 constituent Substances 0.000 claims abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 58
- 239000010959 steel Substances 0.000 description 58
- 238000000034 method Methods 0.000 description 22
- 238000001540 jet deposition Methods 0.000 description 21
- 229910045601 alloy Inorganic materials 0.000 description 20
- 239000000956 alloy Substances 0.000 description 20
- 238000009718 spray deposition Methods 0.000 description 13
- 239000007789 gas Substances 0.000 description 12
- 239000011159 matrix material Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 238000005242 forging Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 7
- 239000002893 slag Substances 0.000 description 7
- 238000005275 alloying Methods 0.000 description 6
- 239000012298 atmosphere Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 239000006104 solid solution Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 150000001247 metal acetylides Chemical class 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The present invention relates to one kind injection shaping high tenacity tool steel, its chemical constituent includes C by mass percentage：0.75% 1.18%, W：0.1% 0.4%, Mo:≤ 3.0%, Cr：4.2% 6.5%, V：2.8% 4.8%, Nb：0.3% 0.9%, Co：0.05% 0.5%, Si：≤ 1.2%, Mn：0.2% 1.0%, N：0.05% 0.4%, surplus is iron and impurity；The carbide of the injection shaping high tenacity tool steel is MC carbide, and the type of MC carbide is（V、Nb）（C、N）.Obtained injection shaping high tenacity tool steel possesses excellent comprehensive mechanical property, especially shows high toughness properties and anti-wear performance, can meet different application field demands, widely used.
Description
Technical field
The present invention relates to a kind of tool steel, more particularly to a kind of injection shaping high tenacity tool steel.
Background technology
Tool steel should be provided simultaneously with including the excellent of four aspects such as anti-wear performance, impact flexibility, bending strength and hardness
Different in nature energy.Under regular service conditions, anti-wear performance determines the length of service life, and the anti-wear performance of tool steel depends on matrix
Content, form and the size distribution of hard second phase present in hardness and steel.Hard second phase in steel includes M6C、
M2C、M23C6、M7C3And MC etc., the microhardness of MC carbide is higher than in other carbide, operation process and can preferably protected
Matrix is protected, so as to reduce the generation of abrasion, the service life of tool and mould is improved.The impact flexibility of tool steel is the weight for reflecting toughness
Want the presence of thick carbide in index, steel to cause stress concentration, make the reduction of instrument steel toughness, cause in relatively low external force loading
Lower to be broken, in order to improve instrument steel toughness, it is important means to reduce carbide content or refined carbides granularity.Instrument
In order to avoid the generation of plastic deformation during steel use, tool steel usually requires that hardness reaches more than HRC60.
Current tool steel is mainly prepared using traditional cast forging process, and tool steel is prepared by technique mistake using cast forging process
Segregation easily occurs in process of setting for the limitation of journey molten steel Slow cooling Solidification Characteristics, alloying component, forms thick carbonization
Thing tissue, even across the processing of follow-up forging rolling, this harmful structure still can bring harmful effect to alloy property, cause casting to be forged
Include intensity, toughness, anti-wear performance, grindability energy etc. on instrument Steel Properties and be in relatively low level, it is difficult to meet high-end processing
Manufacture the requirement to materials'use performance and lifetime stability.Tool steel is prepared using powder metallurgical technique and solves alloying element
The problem of segregation, alloy structure fine uniform is prepared, have and significantly lifted compared to casting wrought alloy performance, but asking of existing
Topic is powder metallurgical technique complexity, long flow path, brings the raising of cost, limits widely using for powder metallurgy tool steel.
Under such a background, tool steel is prepared using spray deposition processing in recent years and is developed, the technological principle of injection shaping is lazy
Property gas such as nitrogen, argon gas protective atmosphere under, molten metal is broken into tiny metal drop using gases at high pressure, be atomized
Molten drop is cooled to half curdled appearance in flight course, then hits deposition receiver surface, deposits, progressively long great achievement is big
Block metal deposit base, can subsequently carry out shaped materials needed for forging rolling processing is obtained to deposit preform.Prepared using spray deposition processing
Tool steel it has been reported that but because the proportioning of its material composition is not reasonable, its carbide tissue of the tool steel of generation is not enough managed
Think, its performance is not excellent enough.
The content of the invention
To solve the deficiencies in the prior art, high-ductility is shaped the invention provides a kind of injection with excellent properties
Property tool steel.
To achieve the above object, its chemical constituent of injection of the invention shaping high tenacity tool steel is wrapped by mass percentage
Include：C：0.75%-1.18%, W：0.1%-0.4%, Mo:≤ 3.0%, Cr：4.2%-6.5%, V：2.8%-4.8%, Nb：0.3%-
0.9%, Co：0.05%-0.5%, Si：≤ 1.2%, Mn：0.2%-1.0%, N：0.05%-0.4%, surplus is iron and impurity；The spray
The carbide for penetrating shaping high tenacity tool steel is MC carbide, and the type of MC carbide is（V、Nb）（C、N）.
The present invention by the design of alloying component, promote tool steel under spray deposition processing the forming core of MC carbide with it is thin
Change, so as to improve the anti-wear performance and toughness of tool steel.
C element part is solid-solution in matrix, improves matrix strength, meanwhile, C element is one of component of carbide, C's
Content is not less than 0.75%, and to ensure that alloying element can fully participate in Carbide Precipitation, C maximum level is no more than 1.18%,
Avoiding excessive C from being solid-solution in matrix causes toughness to decline.It is in the range of 0.75%-1.18%, to result in maximum in above-mentioned C content
The cooperation of anti-wear performance and obdurability.
W, Mo are solid-solution in matrix, improve matrix quenching degree, W content scope of the present invention is 0.1%-0.4%, Mo content model
It is Mo≤3.0% to enclose.
On the one hand Cr effect is solid-solution in matrix, improves quenching degree, and another aspect Cr promotes the precipitation of other carbide, this
The Cr contents of invention are 4.2%-6.5%.
V is primarily used to form MC type carbide, improves the anti-wear performance of tool steel, it is contemplated that tool steel to anti-wear performance and
The dual requirementses of toughness, V content control range is 2.8%-4.8%.
Nb effect is similar with V, and participation forms MC carbide, and Nb of the present invention is solid-solution in MC carbide, improves MC carbide
Number of nuclei during precipitation, promotes MC Carbide Precipitations and refinement, improves anti-wear performance；Nb additions upper content limit is to avoid richness
Nb MC Carbide Precipitations；Therefore Nb content range is limited as 0.3%-0.9%.
Co is mainly solid-solution in matrix, promotes heat treatment process Carbide Precipitation, and refined carbides granularity, Co of the present invention contains
The scope of amount is 0.05%-0.5%.
Si is not involved in carbide and formed, and is usually used as a kind of deoxidier and matrix strengthening member, Si can excessively make matrix
Toughness decline, therefore Si content ranges of the present invention are defined to Si≤1.2%.
Mn is added as deoxidier, can be consolidated sulphur and be reduced red brittleness, in addition manganese increase quenching degree, Mn content ranges of the present invention
For 0.2%-1.0%.
N participates in being formed under MC carbide, condition of fast cooling, and N promotes MC carbide forming core to separate out, while will not cause MC
Carbide is too grown up, and is conducive to improving anti-wear performance；N content scope of the present invention is 0.05%-0.4%.
The alloying elements such as V, Nb, C, N of the present invention form MC carbides（V、Nb）（C、N）, molten steel is in injection shaping
Under the conditions of the quick cooled and solidified of technique, the Nb and N of addition participate in MC carbide and formed, and improve carbide nucleation rate and refinement MC
Carbide particle, improves instrument steel toughness.
As the restriction to aforesaid way, the impurity includes O, O≤0.01%.
O is too high to cause instrument steel toughness to decline, present invention control O content≤0.01%, to ensure the premium properties of steel.
As the restriction to aforesaid way, its chemical constituent includes by mass percentage：C：0.8%-1.15%, W：
0.2%-0.4%, Mo:≤ 2.5%, Cr：4.5%-6.0%, V：3.0%-4.5%, Nb：0.3%-0.8%, Co：0.05%-0.3%, Si：
≤ 1.0%, Mn：0.2%-0.8%, N：0.05%-0.35%, O≤0.008%, surplus is iron and impurity.
In order to reach that each chemical constituent in more preferable combination property, present invention injection shaping high tenacity tool steel should be controlled
Within claimed range.
As the restriction to aforesaid way, the impurity includes S, S≤0.1%.
As the restriction to aforesaid way, the impurity includes P, P≤0.03%.
As the restriction to aforesaid way, the volume fraction of the MC carbide is 3%-7%.
It is used as the restriction to aforesaid way, the MC carbide at least 80Vol% size≤6 μm.
As the restriction to aforesaid way, the MC carbide full-size is no more than 10 μm.
The injection shaping high tenacity tool steel of the present invention, can adopt and prepare with the following method, comprise the following steps：
A, prepare tool steel molten steel by above-mentioned chemical composition requirement and be transferred to ladle；
B, the covering slag of electrified regulation molten steel ladle upper surface covering, maintain the degree of superheat of molten steel；It is logical in ladle bottom
Enter inert gas to be stirred molten steel；
C, molten steel by the mozzle of ladle bottom flowed into pre-warmed tundish with regime flow, in treating that molten steel enters
Between embedding covering slag is applied to molten steel upper surface when not having a mozzle lower surface；
D, to tundish carry out continued compensation heating, maintain molten steel the degree of superheat；
E, molten steel enter using inert gas progress spray deposition behind jet deposition room, in stabilization of export pressure from tundish
Lower completion jet deposition obtains jet deposition ingot；Models of Spray Deposition maintains molten steel temperature stabilization, molten steel flow stable, sprays heavy
Product take-up reel slowly declines to be horizontally rotated simultaneously, and jet deposition take-up reel decrease speed keeps one with the jet deposition ingot speed of growth
Cause jet deposition ingot upper surface constant height；Control gas inlet, go out throughput, keep the inert gas of jet deposition room to protect
Shield property atmosphere；
F, jet deposition ingot is transferred to protective atmosphere stove is annealed or be directly transferred to hot forging process procedure.
Protected in spray deposition processing process using whole process, to control oxygen content and carbide morphology, optimization tool steel
Performance.The covering slag of ladle possesses isolation air and conductive heater function；Ladle bottom is passed through inert gas by air-vent,
Make diverse location molten steel temperature in ladle balanced, while accelerating harmful floating being mingled with to remove；The side of mozzle one of ladle bottom
Guide functions are played in face of molten steel, molten steel circulation process turbulent flow is reduced and produces, it is to avoid slag or reduction, which are mingled with, enters next link,
On the other hand contact of the molten steel directly with air is avoided, prevents molten steel oxygen content from rising；The covering slag of tundish is prevented in flowing through
Between the molten steel that wraps directly and air contact, reduce the rise of molten steel oxygen content；Molten steel enters before tundish to be preheated to tundish,
Molten steel is prevented into local coagulation during tundish or causes second mutually to separate out in advance；In Models of Spray Deposition control gas inlet and
Go out throughput, keep the protective atmosphere of jet deposition room inert gas, jet deposition ingot is played a protective role.
In summary, using technical scheme, the tool steel of acquisition possesses excellent comprehensive mechanical property, especially
Show high toughness properties and anti-wear performance.Due to specific design of alloy and shape preparation technology is injected into, makes work
The Carbide size for having steel is tiny, is evenly distributed, so as to obtain high toughness properties；Carbide is MC carbide, and type is（V、
Nb）（C、N）, the presence of a large amount of high rigidity MC carbide in the base significantly improves the anti-wear performance of tool steel；After heat treatment
More than HRC60 hardness is resulted in, different application field demands can be met, it is widely used.Inventive article steel is using spray
Forming technology preparation is penetrated, alloy preparation cost is low compared to powder metallurgical technique, advantageously reduces alloy holistic cost.
Embodiment
Embodiment one
The present embodiment is related to one group of injection shaping high tenacity tool steel, and its chemical constituent is as shown in table 1.1：
The chemical constituent table of the embodiment one of table 1.1 injection shaping high tenacity tool steel
Using following preparation process：
A, by inventive article steel molten steel be fitted into injection shaping steel-smelting bag in, molten steel Weight Loaded be 3.5 tons；
B, the covering slag electrified regulation covered using graphite electrode to molten steel ladle upper surface, ladle bottom air-vent are led to
Enter molten steel in argon gas stirring ladle, superheat of liquid steel opens molten steel mozzle when reaching 80 DEG C -150 DEG C；
C, molten steel is flowed into by the mozzle of ladle bottom it is preheated to 1000 DEG C of tundish, controls water conservancy diversion tube inlet
Size, it is 100 kg/min to make molten steel flow, and molten steel enters applies covering slag when burying molten steel mozzle lower surface after tundish；
D, Models of Spray Deposition make superheat of liquid steel maintain 80 DEG C -150 DEG C the continuous compensation heating of middle holding；
E, molten steel leak eye by tundish bottom opening and enter jet deposition room, gas injection valve are opened, using nitrogen
Spray deposition is carried out as gas medium, nitrogen gas purity >=99.999%, oxygen content≤2ppm, gas nozzle outlet pressure is
1.0MPa；Molten steel is fractured into half solidification molten drop under inert gas jet-action, therewith with gas mixing formation atomizer (atomizing) cone, melts
Drop flight to the captured deposition of jet deposition take-up reel forms deposition ingot；Models of Spray Deposition maintains molten steel temperature stabilization, molten steel
Stability of flow, jet deposition take-up reel slowly declines to be horizontally rotated simultaneously, jet deposition take-up reel decrease speed and jet deposition
The ingot speed of growth, which is consistent, makes jet deposition ingot upper surface constant height；Before and after jet deposition starts, jet deposition chamber interior
Protectiveness nitrogen atmosphere is kept, deposition process controls gas inlet and goes out throughput, keeps jet deposition room inert gas shielding
Atmosphere；
Single 3 tons of ＞ is obtained after the completion of f, jet deposition, size is Φ 550mm ingots, and jet deposition ingot is transferred into nitrogen
Furnace cooling after gas atmosphere protection anneal.
Φ 50mm bar is made in the injection shaping high tenacity tool steel of the embodiment 1.1 ~ 1.4 of acquisition again.
Embodiment two
The present embodiment is related to the carbide content and granularity of the injection shaping high tenacity tool steel of embodiment one, is heat-treated firmly
Degree, impact flexibility, the checking of anti-wear performance, wherein carbide content and granularity are based on ESEM acquisition organization chart picture and divided
Analysis, heat treatment hardness, impact flexibility, anti-wear performance enter with reference to GB/T 230.1, GB/T 229, GB/T 12444-2006 respectively
Row test.
The injection shaping high tenacity tool steel of embodiment 1.1,1.2 and the casting of purchase are forged into tool steel（Alloy A）And powder
Metallurgical tool steel（Alloy B）It is analyzed, its result is as follows：
The embodiment 1.1,1.2 of table 2.1 and alloy A, B composition composition are contrasted
N.A represents not analyze in upper table.
The embodiment 1.1,1.2 of table 2.2 and alloy A, B carbide content and granularity are contrasted
Carbide size is the size of at least 80Vol% carbide in upper table.
Inventive article steel carbide is analyzed, carbide composition is MC carbide, and MC carbides are（V、
Nb）（C、N）, main component composition is the alloying element such as V, Nb, C, N and a small amount of Fe, Cr.It is of the invention it can be seen from table 2.2
The granularity of Carbides in Tool Steels is very tiny, and most of Carbide size is less than 6 μm, and maximum carbide size is no more than 10 μm,
Carbide size distribution is integrally less than the alloy A prepared using cast forging process Carbide size, and the refinement of Carbide size has
Beneficial to the toughness for improving tool steel.The alloy B Carbide sizes prepared using powder metallurgical technique are the most tiny, most of carbonization
Thing is less than 1.5 μm.Inventive article steel MC carbide volume fractions reach 3%-7%, are conducive to obtaining high anti-wear performance.
The embodiment 1.1,1.2 of table 2.3 and alloy A, B heat treatment hardness, impact flexibility are contrasted
The impact flexibility of inventive article steel is higher than comparative alloy A it can be seen from table 2.3, is possible to preferably be applicable
In with shock loading loading occasion operation.The alloy B impact flexibility highests prepared using powder metallurgical technique, reason is it
Carbide is the most tiny.
The embodiment 1.1,1.2 of table 2.4 and alloy A, B anti-wear performance are contrasted
Inventive article steel anti-wear performance is prepared higher than common cast forging process and closed it can be seen from the correction data of table 2.4
Golden A and powder metallurgical technique prepare alloy B.
In summary, injection shaping high tenacity tool steel of the invention possesses excellent comprehensive mechanical property, especially shows
Go out high toughness properties.Possess high toughness properties reason to be specific design of alloy and use spray deposition processing
Prepared, make Carbide size tiny, be evenly distributed.Inventive article steel carbide is MC carbide, and type is（V、Nb）
（C、N）, the presence of high rigidity MC carbide in the base improves anti-wear performance；More than HRC60 hardness, energy are obtained after heat treatment
Enough meet different types of application demand, it is widely used, such as can be applied to blanking die, thread rolling die, impressing mould, trimming punch die,
The die cut mould such as fine blanking tool, cold roll, industrial shear-blade, conveying wear-resistant medium pump housing parts, steel scrap shredding machine,
The wear-resisting spare parts such as tyre crusher, the first-class plastics machinery parts of screw in injection molding machine, screw sleeve, screw rod etc..Work of the present invention
Have steel to prepare using spray deposition processing, alloy preparation cost is low compared to powder metallurgical technique, advantageously reduces alloy overall
Cost.
Claims (5)
1. one kind injection shaping high tenacity tool steel, it is characterised in that its chemical constituent includes by mass percentage：C：
0.75%-1.18%, W：0.1%-0.4%, Mo：≤ 3.0%, Cr：4.2%-6.5%, V：2.8%-4.8%, Nb：
0.3%-0.9%, Co：0.05%-0.5%, Si：≤ 1.2%, Mn：0.2%-1.0%, N：0.05%-0.4%, surplus is iron
And impurity；The carbide of the injection shaping high tenacity tool steel is MC carbide, the type of MC carbide for (V, Nb) (C,
N), the volume fraction of MC carbide is 3%-7%, and MC carbide at least 80Vol% size≤6 μm, full-size is no more than 10 μ
m。
2. injection shaping high tenacity tool steel according to claim 1, it is characterised in that：The impurity include O, O≤
0.01%.
3. injection shaping high tenacity tool steel according to claim 2, it is characterised in that its chemical constituent presses quality percentage
Include than meter：C：0.8%-1.15%, W：0.2%-0.4%, Mo：≤ 2.5%, Cr：4.5%-6.0%, V：3.0%-
4.5%, Nb：0.3%-0.8%, Co：0.05%-0.3%, Si：≤ 1.0%, Mn：0.2%-0.8%, N：0.05%-
0.35%, O≤0.008%, surplus is iron and impurity.
4. injection shaping high tenacity tool steel according to claim 1, it is characterised in that：The impurity include S, S≤
0.1%.
5. injection shaping high tenacity tool steel according to claim 1, it is characterised in that：The impurity include P, P≤
0.03%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510249127.1A CN104878300B (en) | 2015-05-15 | 2015-05-15 | Injection shaping high tenacity tool steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510249127.1A CN104878300B (en) | 2015-05-15 | 2015-05-15 | Injection shaping high tenacity tool steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104878300A CN104878300A (en) | 2015-09-02 |
| CN104878300B true CN104878300B (en) | 2017-08-04 |
Family
ID=53945969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510249127.1A Active CN104878300B (en) | 2015-05-15 | 2015-05-15 | Injection shaping high tenacity tool steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104878300B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803342B (en) * | 2016-04-20 | 2017-09-12 | 上海瀚氏模具成型有限公司 | A kind of preparation method of making Nano surface low-alloy steel mould |
| CN117102407B (en) * | 2023-10-25 | 2024-01-02 | 江苏莱赫润轧辊科技有限公司 | Processing device for chilled cast iron piston rod |
| CN117966040A (en) * | 2024-01-30 | 2024-05-03 | 浙江正达新材料科技有限公司 | A high vanadium, niobium and low segregation spray forming tool steel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171233A (en) * | 1978-05-22 | 1979-10-16 | Bethlehem Steel Corporation | Lens quality of die steel |
| SE508872C2 (en) * | 1997-03-11 | 1998-11-09 | Erasteel Kloster Ab | Powder metallurgically made steel for tools, tools made therefrom, process for making steel and tools and use of steel |
| CN100482842C (en) * | 2007-01-05 | 2009-04-29 | 河冶科技股份有限公司 | High malleable high wear-resisting cold process mould steel |
| CN103789640A (en) * | 2012-11-02 | 2014-05-14 | 无锡市金荡机械厂 | Injection molding based preparation method of cobalt-free high-speed steel |
| CN104004955B (en) * | 2014-05-29 | 2016-08-17 | 河冶科技股份有限公司 | The manufacture method of high performance jetting steel |
| CN104278200B (en) * | 2014-09-17 | 2017-02-15 | 北京科技大学 | High-hot-strength spray-formed hot work die steel and preparation method thereof |
-
2015
- 2015-05-15 CN CN201510249127.1A patent/CN104878300B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104878300A (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104894483B (en) | Powder metallurgy wear resistant tools steel | |
| CN103624084B (en) | Resource-saving type high-boron high-speed steel composite roll and manufacturing method thereof | |
| CN102319897B (en) | Manufacturing method of spray formed high-vanadium high-speed steel composite roller | |
| CN100457952C (en) | Casting high speed steel cutter and preparation method thereof | |
| CN109252104B (en) | High-speed steel and production method thereof | |
| CN103194685B (en) | Powder metallurgy high abrasion high toughness cold working die steel and preparation method thereof | |
| CN104878298B (en) | Powder metallurgy wearing-resistant corrosion-resistant alloy | |
| CN104278200A (en) | High-hot-strength spray-formed hot work die steel and preparation method thereof | |
| CN101275204A (en) | Cr-Mn-Ti gear steel and preparation thereof | |
| CN104878299B (en) | Powder metallurgy wear-resistant and corrosion-resistant tool steel | |
| CN104878304B (en) | Wear resistant and corrosion resistant tool steel for spray forming | |
| CN104878306B (en) | Wearproof tool steel for spray forming | |
| CN101954378B (en) | Working roll for rolling medium-thickness plate with high grade and high strength and manufacture method thereof | |
| CN104878300B (en) | Injection shaping high tenacity tool steel | |
| CN103789640A (en) | Injection molding based preparation method of cobalt-free high-speed steel | |
| CN108018500A (en) | It is cold and hot to double as mould steel and its manufacturing process | |
| CN103305772A (en) | High-hardness slurry pump body and manufacturing method thereof | |
| CN104874802B (en) | Powder metallurgy is wear-resistant corrosion resisting alloy bar | |
| CN103350184B (en) | Metal mold casting chromium white cast iron grinding ball used inoculation coating and preparation method thereof | |
| US11878344B2 (en) | Directionally solidified high-boron and high-vanadium high-speed steel and method for preparing same | |
| CN104894481B (en) | Spray formed wear resistant and corrosion resistant alloy | |
| CN104894482B (en) | Spray formed tool steel | |
| CN104894480B (en) | Spray formed cold work tool steel | |
| CN104878303B (en) | Wear-resistant and corrosion-resistant alloy | |
| CN104878305B (en) | Wear-resistant corrosion-resisting alloy steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Xiaoming Inventor after: Mi Yongwang Inventor after: Shao Qingli Inventor after: Kuang Chunjiang Inventor after: Wu Lizhi Inventor after: Fang Yucheng Inventor before: Li Xiaoming Inventor before: Mi Yongwang Inventor before: Shao Liqing Inventor before: Kuang Chunjiang Inventor before: Wu Lizhi Inventor before: Fang Yucheng |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160607 Address after: 050000 Polytron Technologies Inc technology center, 17 Shiji Avenue, Shijiazhuang economic and Technological Development Zone, Hebei Applicant after: Heye Sci. & Tech. Co., Ltd. Applicant after: Antai Science and Technology Co., Ltd. Address before: 050000 Polytron Technologies Inc technology center, 17 Shiji Avenue, Shijiazhuang economic and Technological Development Zone, Hebei Applicant before: Heye Sci. & Tech. Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |