CN201344237Y - Double-metal valve rod nut for gate valve - Google Patents
Double-metal valve rod nut for gate valve Download PDFInfo
- Publication number
- CN201344237Y CN201344237Y CNU2008202331244U CN200820233124U CN201344237Y CN 201344237 Y CN201344237 Y CN 201344237Y CN U2008202331244 U CNU2008202331244 U CN U2008202331244U CN 200820233124 U CN200820233124 U CN 200820233124U CN 201344237 Y CN201344237 Y CN 201344237Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- rod nut
- iron
- base body
- gate valve
- 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.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 title abstract description 15
- 229910052751 metal Inorganic materials 0.000 title abstract description 15
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 11
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 11
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010931 gold Substances 0.000 claims abstract description 8
- 229910052737 gold Inorganic materials 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 7
- 229910001060 Gray iron Inorganic materials 0.000 abstract description 2
- 239000010962 carbon steel Substances 0.000 abstract 3
- 238000013329 compounding Methods 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009972 noncorrosive effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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- Contacts (AREA)
Abstract
The utility model discloses a double-metal valve rod nut for a gate valve, belonging to the field of valves. The nut is only applicable to gate valves with nominal pressure of PN1.6-6.7MPa and nominal diameter of DN50-300mm, gray cast-iron gate valves with nominal pressure of PN1.0MPa and nominal diameter of DN50-450mm, as well as diaphragm valves with nominal pressure of PN0.6MPa and nominal diameter of DN15-20mm. The double-metal valve rod nut comprises a nodular cast-iron or carbon steel base body(1) provided with internal screw threads, and is characterized in that a copper alloy layer(2) is compounded in the nodular cast-iron or carbon steel base body(1) and a gold imitating coating is plated on the outer surface of the base body(1). By compounding a copper alloy layer in the nodular cast-iron or carbon steel base body(1) provided with internal screw threads, the utility model reduces the fabricating cost and saves more than 95% of nonferrous metal, and since the gold imitating coating is plated on the outer surface of the entire valve rod nut, the valve rod nut can not have rust, thus greatly improving the service life.
Description
Technical field
The utility model relates to a kind of bimetal gate valve rod nut, belongs to valve field.This nut only is suitable for nominal pressure PN1.6-6.4MPa, the gate valve of inside nominal diameter DN50-300mm; Nominal pressure PN1.0Mpa, the gray cast iron gate valve of inside nominal diameter DN50-450mm; And nominal pressure PN0.6Mpa, the membrane valve of inside nominal diameter DN15-20mm.
Background technique
The Stem Mut of gate valve stipulates it is ZCuZn38Mn2Pb2, ZCuAI9-4, ZCuZn40Mn3Fe1 according to the material of People's Republic of China's Machinery Ministry standard (JB1699-91, JB1698-91, JB1701-91).Because the price of copper resource constantly rises in recent years, the valve industry was tested a lot of substitution material in order to reduce cost of material, as patent No. ZL200720018492.2 Bimetallic valve stem nut, owing to adopt outer flip sleeve of Cuprum alloy and plain cushion, the manufacture cost height, the easy corrosion of outer surface simultaneously, afunction, reduction of service life.
The model utility content
According to above deficiency of the prior art, problem to be solved in the utility model is: provide that a kind of cost is low, long service life, non-corrosive, intensity height, the bimetal gate valve rod nut being convenient to reclaim.
The technological scheme that its technical problem that solves the utility model adopts is: this bimetal gate valve rod nut, comprise the nodular cast iron or the plain steel that have internal thread, it is characterized in that: compound layer of copper alloy-layer in described nodular cast iron, the plain steel, outer surface of matrix imitation gold plating coating.
Outer surface of matrix imitation gold plating coating is the 4-6 micron.Can prevent surface corrosion effectively.
The intensity and the anti-attrition using effect of trapezoidal nut friction pair in only considering, its material is selected according to mechanical industry standard.The Cuprum alloy of inner trapezoidal thread and surperficial anti-attrition layer trapezoidal thread and steel base adopt High Temperature High Pressure centrifugal action simultaneously, make it form extremely firm molecular bond and compoundly are one.Its two kinds of formed adhesive strengths of metal are not less than wherein a kind of tensile strength of metal.
The beneficial effect that the utility model bimetal gate valve rod nut is had is: compound layer of copper alloy-layer in nodular cast iron by will having internal thread or the plain steel, reduce manufacture cost, and save non-ferrous metal up to more than 95%; Be steel base owing to what adopt again, only take surface hardening to improve its hardness number, can satisfy the difference of hardness of the coupling surface of nut and support friction pair on the nut surface; Because electroplate one deck imitation gold deposit at whole Stem Mut outer surface, non-corrosive has improved working life greatly; The convenient recycling, nonferrous materials can be used lathe, drilling machine, drilling goes out non-ferrous metal and partly gets final product, and also can use the thawing method, melts non-ferrous metal, can also recover the inner trapezoidal thread that has damaged with the compound again non-ferrous metal of going up of secondary composite algorithm.The utility model meets on the basis of NBS reasonable in design, satisfies usage requirement, has more to be worth and functional.
Description of drawings
Fig. 1 the utility model embodiment 1 structural representation;
Fig. 2 the utility model embodiment 2 structural representation;
Fig. 3 the utility model embodiment 3 structural representation.
Wherein: 1, matrix 2, copper alloy layer 3, imitation gold deposit.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Embodiment 1:
As shown in Figure 1, the gate valve rod nut of sliding friction is by nodular cast iron or plain steel 1, the compound one deck trapezoidal thread of matrix 1 inner plane copper alloy layer 2.Two kinds of metals are in High Temperature High Pressure while centrifugal action, form the molecule covalent bond, and are combined into one.
Embodiment 2:
As shown in Figure 2, the gate valve rod nut of sliding friction is by nodular cast iron or plain steel 1, compound layer of copper alloy-layer 2 on the trapezoidal thread in the matrix 1.Two kinds of metals are in High Temperature High Pressure while centrifugal action, form the molecule covalent bond, and are combined into one.Copper alloy layer 2 thickness are about 1mm.
Embodiment 3:
As shown in Figure 3, the gate valve rod nut that possesses rolling friction is by nodular cast iron or plain steel 1, compound layer of copper alloy-layer 2 on the trapezoidal thread in the matrix 1.Two kinds of metals are in High Temperature High Pressure while centrifugal action, form the molecule covalent bond, and are combined into one.Copper alloy layer 2 thickness are about 1mm.
Making method:
For satisfying the operating mode usage requirement of gate valve, can carry out surface hardening to matrix 1 and improve its surface hardness.
Claims (2)
1, bimetal gate valve rod nut comprises the nodular cast iron or the plain steel (1) that have internal thread, it is characterized in that: compound layer of copper alloy-layer (2) in described nodular cast iron, the plain steel (1), matrix (1) outer surface imitation gold plating coating (3).
2, bimetal gate valve rod nut according to claim 1 is characterized in that: imitation gold deposit (3) is the 4-6 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202331244U CN201344237Y (en) | 2008-12-25 | 2008-12-25 | Double-metal valve rod nut for gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202331244U CN201344237Y (en) | 2008-12-25 | 2008-12-25 | Double-metal valve rod nut for gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344237Y true CN201344237Y (en) | 2009-11-11 |
Family
ID=41275818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202331244U Expired - Fee Related CN201344237Y (en) | 2008-12-25 | 2008-12-25 | Double-metal valve rod nut for gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201344237Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457387A (en) * | 2017-08-04 | 2017-12-12 | 安徽信息工程学院 | A kind of valve rod nut and valve rod nut processing method |
| CN111843384A (en) * | 2020-07-20 | 2020-10-30 | 河海大学常州校区 | A kind of composite manufacturing method of sea water pump impeller nut |
-
2008
- 2008-12-25 CN CNU2008202331244U patent/CN201344237Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457387A (en) * | 2017-08-04 | 2017-12-12 | 安徽信息工程学院 | A kind of valve rod nut and valve rod nut processing method |
| CN107457387B (en) * | 2017-08-04 | 2020-08-04 | 安徽信息工程学院 | Valve stem nut and valve stem nut processing method |
| CN111843384A (en) * | 2020-07-20 | 2020-10-30 | 河海大学常州校区 | A kind of composite manufacturing method of sea water pump impeller nut |
| CN111843384B (en) * | 2020-07-20 | 2022-02-01 | 河海大学常州校区 | Composite manufacturing method of impeller nut of sea water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20131225 |