CN104789903A - High strength steel sheet for heavy cross beam storage rack and heat treatment technology of high strength steel sheet - Google Patents
High strength steel sheet for heavy cross beam storage rack and heat treatment technology of high strength steel sheet Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 113
- 239000010959 steel Substances 0.000 title claims abstract description 113
- 238000005516 engineering process Methods 0.000 title claims abstract description 5
- 238000003860 storage Methods 0.000 title abstract description 7
- 238000010438 heat treatment Methods 0.000 title abstract 2
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 40
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 33
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 33
- 238000005260 corrosion Methods 0.000 claims description 28
- 230000007797 corrosion Effects 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 238000005507 spraying Methods 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 15
- 238000007669 thermal treatment Methods 0.000 claims description 15
- 229910001567 cementite Inorganic materials 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical group C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 239000010451 perlite Substances 0.000 claims description 12
- 235000019362 perlite Nutrition 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 239000010936 titanium Substances 0.000 claims description 12
- 229910052720 vanadium Inorganic materials 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 11
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 11
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 11
- 239000013530 defoamer Substances 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 claims description 11
- 239000003822 epoxy resin Substances 0.000 claims description 11
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 229920000647 polyepoxide Polymers 0.000 claims description 11
- -1 polyoxyethylene Polymers 0.000 claims description 11
- 229910052711 selenium Inorganic materials 0.000 claims description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 229960001866 silicon dioxide Drugs 0.000 claims description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims description 11
- 229920002050 silicone resin Polymers 0.000 claims description 11
- 229910052717 sulfur Inorganic materials 0.000 claims description 11
- 239000004408 titanium dioxide Substances 0.000 claims description 11
- 229910052721 tungsten Inorganic materials 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The invention discloses a high strength steel sheet for a heavy cross beam storage rack and a heat treatment technology of the heavy cross beam storage rack. The steel sheet comprises the following ingredients by mass percentage: 0.03-0.05% of C, 0.27-0.29% of Mn, 0.04-0.06% of Si, 0.002-0.004% of P, 0.001-0.003% of S, 0.023-0.025% of Co, 0.13-0.15% of V, 0.16-0.19% of Ti, 0.23-0.27% of Cu, 0.17-0.19% of Se, 8.7-8.9% of Cr, 0.23-0.25% of Mo, 0.11-0.13% of Ni, 0.16-0.18% of Zn, 0.12-0.14% of W, and the balance of Fe and unavoidable impurities.
Description
Technical field
The invention belongs to Storage and circulation equipment field, relate to a kind of high tensile steel plate for Heavy Traverse formula shelf and thermal treatment process thereof and method to set up thereof.
Background technology
The important tool that shelf are warehouse modernization and raise the efficiency, and market requirement share is more and more higher.Along with economic jump development, foreign capital affiliate pours into China Yangtze River Delta, the Delta of the Pearl River one band in a large number, not only drive the development of local economy, and brought new management philosophy and administrative skill, more and more employing automated storing in current storage rack storehouse.
Cross beam type shelf are also known as pellet type shelf, and be become by post sheet, crossbeam and other enclosure group, unit shelf every layer of load can reach 4000kg; Goods is positioned on pallet, carries out access operation by fork truck, accesses convenient, flexible, configurable shift-forward type battery fork lift truck etc.; Cross beam type shelf are the most frequently used at present, a kind of shelf that cost is minimum, but because its structural strength is low, limitation is caused to it, its function can not be given full play to, in addition, especially for when depositing some perishable goods, usually can cause storage facilities just fracture at short notice because of being corroded of steel plate, add warehouse cost; And in some cold districts, the low-temperature flexibility in the steel plate of shelf load-bearing is not high yet, storage facilities just fracture at short notice also often can be caused.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provides a kind of high tensile steel plate for Heavy Traverse formula shelf and thermal treatment process thereof, there is strong corrosion resistance, transverse yield strength >=230 MPa, high-ductility, and there is excellent low temperature toughness.
In order to solve above technical problem, the invention provides a kind of high tensile steel plate for Heavy Traverse formula shelf, the composition of this steel plate and mass percent are: C:0.03-0.05%, Mn:0.27-0.29%, Si:0.04-0.06%, P:0.002-0.004%, S:0.001-0.003%, Co:0.023-0.025%, V:0.13-0.15%, Ti:0.16-0.19%, Cu:0.23-0.27%, Se:0.17-0.19%, Cr:8.7-8.9%, Mo:0.23-0.25%, Ni:0.11-0.13%, Zn:0.16-0.18%, W:0.12-0.14%, surplus is Fe and inevitable impurity,
Steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, and at thickness place, surface to 1/5, second-phase percent by volume is 2.1-2.3%, and 1/4 thickness is 4.3-4.5% to center second-phase percent by volume;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is made up of component A and B component;
Component A is according to the mass fraction: epoxy modified silicone resin: 60-65 part, deionized water: 25-28 part, silicon carbide: 17-19 part, dodecyl acrylate: 12-14 part, alkylphenol polyoxyethylene: 7-9 part, toluene: 5-7 part, Trimethyllaurylammonium bromide: 2-5 part;
B component is according to the mass fraction: vinylbenzene: 12-17 part, epoxy resin: 40-45 part, silicon-dioxide: 7-9 part, Rutile type Titanium Dioxide: 12-14 part, methacrylic acid: 7-9 part, GPES type defoamer: 4-6 part.
This invention also provides a kind of thermal treatment process for Heavy Traverse formula shelf high tensile steel plate, and concrete technology is as follows:
Step (1): the steel plate forged is heated to 1240-1260 DEG C by high-frequency quenching stove, insulation 1-2h, then air cooling is to 940-950 DEG C, adopts the first refrigerating work procedure to be cooled to 620-630 DEG C, then is cooled to room temperature by the second refrigerating work procedure;
Step (2), surface of steel plate is evenly sprayed one deck powdered graphite, thickness is 0.05-0.08mm, then be heated to 530-540 DEG C, insulation 30-40min, reheats to 970-980 DEG C, insulation 2-4h, then adopt nitrogen cooling, be cooled to 420-430 DEG C with the speed of 5-10 DEG C/s, then air cooling is to room temperature;
Step (3): cleaning surface of steel plate, to its surface uniform spraying corrosion-resistant coating, thickness is after 2-3mm, and putting it into envrionment temperature is 40-45 DEG C, and keep 3-4h, then air cooling is to room temperature.
The technical scheme that the present invention limits further is:
The aforesaid high tensile steel plate for Heavy Traverse formula shelf, the composition of this steel plate and mass percent are: C:0.03%, Mn:0.27%, Si:0.04%, P:0.002%, S:0.001%, Co:0.023%, V:0.13%, Ti:0.16%, Cu:0.23%, Se:0.17%, Cr:8.7%, Mo:0.23%, Ni:0.11%, Zn:0.16%, W:0.12%, surplus is Fe and inevitable impurity;
Steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.1%, 1/4 thickness is 4.3% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is made up of component A and B component;
Component A is according to the mass fraction: epoxy modified silicone resin: 60 parts, deionized water: 25 parts, silicon carbide: 17 parts, dodecyl acrylate: 12 parts, alkylphenol polyoxyethylene: 7 parts, toluene: 5 parts, Trimethyllaurylammonium bromide: 2 parts;
B component is according to the mass fraction: vinylbenzene: 12 parts, epoxy resin: 40 parts, silicon-dioxide: 7 parts, Rutile type Titanium Dioxide: 12 parts, methacrylic acid: 7 parts, GPES type defoamer: 4 parts.
The aforesaid high tensile steel plate for Heavy Traverse formula shelf, the composition of this steel plate and mass percent are: C:0.04%, Mn:0.28%, Si:0.05%, P:0.003%, S:0.002%, Co:0.024%, V:0.14%, Ti:0.17%, Cu:0.24%, Se:0.18%, Cr:8.8%, Mo:0.24%, Ni:0.12%, Zn:0.17%, W:0.13%, surplus is Fe and inevitable impurity;
Steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.2%, 1/4 thickness is 4.4% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is made up of component A and B component;
Component A is according to the mass fraction: epoxy modified silicone resin: 63 parts, deionized water: 27 parts, silicon carbide: 18 parts, dodecyl acrylate: 13 parts, alkylphenol polyoxyethylene: 8 parts, toluene: 6 parts, Trimethyllaurylammonium bromide: 4 parts;
B component is according to the mass fraction: vinylbenzene: 15 parts, epoxy resin: 43 parts, silicon-dioxide: 8 parts, Rutile type Titanium Dioxide: 13 parts, methacrylic acid: 8 parts, GPES type defoamer: 5 parts.
The aforesaid high tensile steel plate for Heavy Traverse formula shelf, the composition of this steel plate and mass percent are: C:0.05%, Mn:0.29%, Si:0.06%, P:0.004%, S:0.003%, Co:0.025%, V:0.15%, Ti:0.19%, Cu:0.27%, Se:0.19%, Cr:8.9%, Mo:0.25%, Ni:0.13%, Zn:0.18%, W:0.14%, surplus is Fe and inevitable impurity;
Steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.3%, 1/4 thickness is 4.5% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is made up of component A and B component;
Component A is according to the mass fraction: epoxy modified silicone resin: 65 parts, deionized water: 28 parts, silicon carbide: 19 parts, dodecyl acrylate: 14 parts, alkylphenol polyoxyethylene: 9 parts, toluene: 7 parts, Trimethyllaurylammonium bromide: 5 parts;
B component is according to the mass fraction: vinylbenzene: 17 parts, epoxy resin: 45 parts, silicon-dioxide: 9 parts, Rutile type Titanium Dioxide: 14 parts, methacrylic acid: 9 parts, GPES type defoamer: 6 parts.
The aforesaid thermal treatment process for Heavy Traverse formula shelf high tensile steel plate, first refrigerating work procedure is: adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 12 DEG C/s, steel plate is cooled to 720 DEG C, adopt water-cooled, with the rate of cooling of 8 DEG C/s, steel plate is chilled to 620-630 DEG C.
The aforesaid thermal treatment process for Heavy Traverse formula shelf high tensile steel plate, second refrigerating work procedure: adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 8 DEG C/s, steel plate is chilled to 360 DEG C, adopt water-cooled, with the rate of cooling of 10 DEG C/s, steel plate is chilled to room temperature.
The invention has the beneficial effects as follows:
Steel plate of the present invention is containing C, Si, Mn element, add Cu, Ni, V, Ti, Mo, Cr can refined crystalline strengthening and precipitation strength, and it is with low cost, this steel plate is hypereutectoid steel, namely first-phase is perlite, second-phase is cementite, at thickness place, surface to 1/5, second-phase percent by volume is 2.1-2.3%, 1/4 thickness is 4.3-4.5% to center second-phase percent by volume, thus successfully produce the steel plate of the heavy beam of shelf, there is good transverse yield strength and high-ductility, transverse tensile strength >=420MPa, transverse yield strength >=230 MPa, horizontal expansion rate >=28%, thickness direction relative reduction in area >=51%,-25 DEG C of Charpy-V impact power >=160J, and by thermal treatment process, increase intensity and the rub resistance ability of steel plate, surface scribbles powdered graphite, reduces the frictional coefficient on surface, reduces wearing and tearing, increases its work-ing life.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited thereto.
embodiment 1
A kind of high tensile steel plate for Heavy Traverse formula shelf that the present embodiment provides, the composition of this steel plate and mass percent are: C:0.03%, Mn:0.27%, Si:0.04%, P:0.002%, S:0.001%, Co:0.023%, V:0.13%, Ti:0.16%, Cu:0.23%, Se:0.17%, Cr:8.7%, Mo:0.23%, Ni:0.11%, Zn:0.16%, W:0.12%, surplus is Fe and inevitable impurity;
Steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.1%, 1/4 thickness is 4.3% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is made up of component A and B component;
Component A is according to the mass fraction: epoxy modified silicone resin: 60 parts, deionized water: 25 parts, silicon carbide: 17 parts, dodecyl acrylate: 12 parts, alkylphenol polyoxyethylene: 7 parts, toluene: 5 parts, Trimethyllaurylammonium bromide: 2 parts;
B component is according to the mass fraction: vinylbenzene: 12 parts, epoxy resin: 40 parts, silicon-dioxide: 7 parts, Rutile type Titanium Dioxide: 12 parts, methacrylic acid: 7 parts, GPES type defoamer: 4 parts.
The thermal treatment process of a kind of high tensile steel plate for Heavy Traverse formula shelf that the present embodiment also provides, concrete steps are as follows:
Step (1): the steel plate forged is heated to 1220 DEG C by high-frequency quenching stove, insulation 1.5h, then air cooling to 945 DEG C, adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 12 DEG C/s, steel plate is cooled to 720 DEG C, adopt water-cooled, with the rate of cooling of 8 DEG C/s, steel plate is chilled to 625 DEG C, then adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 8 DEG C/s, steel plate is chilled to 360 DEG C, adopt water-cooled, with the rate of cooling of 10 DEG C/s, steel plate is chilled to room temperature;
Step (2), evenly sprays one deck powdered graphite by surface of steel plate, and thickness is 0.06mm, is then heated to 535 DEG C, and insulation 35min, reheats to 975 DEG C, insulation 3h, and then adopt nitrogen cooling, be cooled to 425 DEG C with the speed of 8 DEG C/s, then air cooling is to room temperature;
Step (3): cleaning surface of steel plate, to its surface uniform spraying corrosion-resistant coating, thickness is after 2.8mm, and putting it into envrionment temperature is 43 DEG C, and keep 3.5h, then air cooling is to room temperature.
embodiment 2
A kind of high tensile steel plate for Heavy Traverse formula shelf that the present embodiment provides, the composition of this steel plate and mass percent are: C:0.04%, Mn:0.28%, Si:0.05%, P:0.003%, S:0.002%, Co:0.024%, V:0.14%, Ti:0.17%, Cu:0.24%, Se:0.18%, Cr:8.8%, Mo:0.24%, Ni:0.12%, Zn:0.17%, W:0.13%, surplus is Fe and inevitable impurity;
Steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.2%, 1/4 thickness is 4.4% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is made up of component A and B component;
Component A is according to the mass fraction: epoxy modified silicone resin: 63 parts, deionized water: 27 parts, silicon carbide: 18 parts, dodecyl acrylate: 13 parts, alkylphenol polyoxyethylene: 8 parts, toluene: 6 parts, Trimethyllaurylammonium bromide: 4 parts;
B component is according to the mass fraction: vinylbenzene: 15 parts, epoxy resin: 43 parts, silicon-dioxide: 8 parts, Rutile type Titanium Dioxide: 13 parts, methacrylic acid: 8 parts, GPES type defoamer: 5 parts.
The thermal treatment process of a kind of high tensile steel plate for Heavy Traverse formula shelf that the present embodiment also provides, concrete steps are as follows:
Step (1): the steel plate forged is heated to 1240 DEG C by high-frequency quenching stove, insulation 1h, then air cooling to 940 DEG C, adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 12 DEG C/s, steel plate is cooled to 720 DEG C, adopt water-cooled, with the rate of cooling of 8 DEG C/s, steel plate is chilled to 620 DEG C, then adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 8 DEG C/s, steel plate is chilled to 360 DEG C, adopt water-cooled, with the rate of cooling of 10 DEG C/s, steel plate is chilled to room temperature;
Step (2), evenly sprays one deck powdered graphite by surface of steel plate, and thickness is 0.05mm, is then heated to 530 DEG C, and insulation 30min, reheats to 970 DEG C, insulation 2h, and then adopt nitrogen cooling, be cooled to 420 DEG C with the speed of 5 DEG C/s, then air cooling is to room temperature;
Step (3): cleaning surface of steel plate, to its surface uniform spraying corrosion-resistant coating, thickness is after 2mm, and putting it into envrionment temperature is 40 DEG C, and keep 3h, then air cooling is to room temperature.
embodiment 3
A kind of high tensile steel plate for Heavy Traverse formula shelf that the present embodiment provides, the composition of this steel plate and mass percent are: C:0.05%, Mn:0.29%, Si:0.06%, P:0.004%, S:0.003%, Co:0.025%, V:0.15%, Ti:0.19%, Cu:0.27%, Se:0.19%, Cr:8.9%, Mo:0.25%, Ni:0.13%, Zn:0.18%, W:0.14%, surplus is Fe and inevitable impurity;
Steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.3%, 1/4 thickness is 4.5% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is made up of component A and B component;
Component A is according to the mass fraction: epoxy modified silicone resin: 65 parts, deionized water: 28 parts, silicon carbide: 19 parts, dodecyl acrylate: 14 parts, alkylphenol polyoxyethylene: 9 parts, toluene: 7 parts, Trimethyllaurylammonium bromide: 5 parts;
B component is according to the mass fraction: vinylbenzene: 17 parts, epoxy resin: 45 parts, silicon-dioxide: 9 parts, Rutile type Titanium Dioxide: 14 parts, methacrylic acid: 9 parts, GPES type defoamer: 6 parts.
The thermal treatment process of a kind of high tensile steel plate for Heavy Traverse formula shelf that the present embodiment also provides, concrete steps are as follows:
Step (1): the steel plate forged is heated to 1260 DEG C by high-frequency quenching stove, insulation 2h, then air cooling to 950 DEG C, adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 12 DEG C/s, steel plate is cooled to 720 DEG C, adopt water-cooled, with the rate of cooling of 8 DEG C/s, steel plate is chilled to 630 DEG C, then adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 8 DEG C/s, steel plate is chilled to 360 DEG C, adopt water-cooled, with the rate of cooling of 10 DEG C/s, steel plate is chilled to room temperature;
Step (2), evenly sprays one deck powdered graphite by surface of steel plate, and thickness is 0.08mm, is then heated to 540 DEG C, insulation 40min, reheats to 980 DEG C, insulation 4h, then adopt nitrogen cooling, be cooled to 430 DEG C with the speed of 10 DEG C/s, then air cooling is to room temperature;
Step (3): cleaning surface of steel plate, to its surface uniform spraying corrosion-resistant coating, thickness is after 3mm, and putting it into envrionment temperature is 45 DEG C, and keep 4h, then air cooling is to room temperature.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (7)
1. the high tensile steel plate for Heavy Traverse formula shelf, it is characterized in that: the composition of this steel plate and mass percent are: C:0.03-0.05%, Mn:0.27-0.29%, Si:0.04-0.06%, P:0.002-0.004%, S:0.001-0.003%, Co:0.023-0.025%, V:0.13-0.15%, Ti:0.16-0.19%, Cu:0.23-0.27%, Se:0.17-0.19%, Cr:8.7-8.9%, Mo:0.23-0.25%, Ni:0.11-0.13%, Zn:0.16-0.18%, W:0.12-0.14%, surplus is Fe and inevitable impurity;
Described steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, and at thickness place, surface to 1/5, second-phase percent by volume is 2.1-2.3%, and 1/4 thickness is 4.3-4.5% to center second-phase percent by volume;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is made up of component A and B component;
Described component A is according to the mass fraction: epoxy modified silicone resin: 60-65 part, deionized water: 25-28 part, silicon carbide: 17-19 part, dodecyl acrylate: 12-14 part, alkylphenol polyoxyethylene: 7-9 part, toluene: 5-7 part, Trimethyllaurylammonium bromide: 2-5 part;
Described B component is according to the mass fraction: vinylbenzene: 12-17 part, epoxy resin: 40-45 part, silicon-dioxide: 7-9 part, Rutile type Titanium Dioxide: 12-14 part, methacrylic acid: 7-9 part, GPES type defoamer: 4-6 part.
2. the high tensile steel plate for Heavy Traverse formula shelf according to claim 1, is characterized in that: the composition of this steel plate and mass percent are: C:0.03%, Mn:0.27%, Si:0.04%, P:0.002%, S:0.001%, Co:0.023%, V:0.13%, Ti:0.16%, Cu:0.23%, Se:0.17%, Cr:8.7%, Mo:0.23%, Ni:0.11%, Zn:0.16%, W:0.12%, surplus is Fe and inevitable impurity;
Described steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.1%, 1/4 thickness is 4.3% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is made up of component A and B component;
Described component A is according to the mass fraction: epoxy modified silicone resin: 60 parts, deionized water: 25 parts, silicon carbide: 17 parts, dodecyl acrylate: 12 parts, alkylphenol polyoxyethylene: 7 parts, toluene: 5 parts, Trimethyllaurylammonium bromide: 2 parts;
Described B component is according to the mass fraction: vinylbenzene: 12 parts, epoxy resin: 40 parts, silicon-dioxide: 7 parts, Rutile type Titanium Dioxide: 12 parts, methacrylic acid: 7 parts, GPES type defoamer: 4 parts.
3. the high tensile steel plate for Heavy Traverse formula shelf according to claim 1 and thermal treatment process thereof, is characterized in that: the composition of this steel plate and mass percent are: C:0.04%, Mn:0.28%, Si:0.05%, P:0.003%, S:0.002%, Co:0.024%, V:0.14%, Ti:0.17%, Cu:0.24%, Se:0.18%, Cr:8.8%, Mo:0.24%, Ni:0.12%, Zn:0.17%, W:0.13%, surplus is Fe and inevitable impurity;
Described steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.2%, 1/4 thickness is 4.4% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is made up of component A and B component;
Described component A is according to the mass fraction: epoxy modified silicone resin: 63 parts, deionized water: 27 parts, silicon carbide: 18 parts, dodecyl acrylate: 13 parts, alkylphenol polyoxyethylene: 8 parts, toluene: 6 parts, Trimethyllaurylammonium bromide: 4 parts;
Described B component is according to the mass fraction: vinylbenzene: 15 parts, epoxy resin: 43 parts, silicon-dioxide: 8 parts, Rutile type Titanium Dioxide: 13 parts, methacrylic acid: 8 parts, GPES type defoamer: 5 parts.
4. the high tensile steel plate for Heavy Traverse formula shelf according to claim 1 and thermal treatment process thereof, is characterized in that: the composition of this steel plate and mass percent are: C:0.05%, Mn:0.29%, Si:0.06%, P:0.004%, S:0.003%, Co:0.025%, V:0.15%, Ti:0.19%, Cu:0.27%, Se:0.19%, Cr:8.9%, Mo:0.25%, Ni:0.13%, Zn:0.18%, W:0.14%, surplus is Fe and inevitable impurity;
Described steel plate is hypereutectoid steel, and namely first-phase is perlite, and second-phase is cementite, be 2.3%, 1/4 thickness is 4.5% to center second-phase percent by volume in thickness place, surface to 1/5 second-phase percent by volume;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is made up of component A and B component;
Described component A is according to the mass fraction: epoxy modified silicone resin: 65 parts, deionized water: 28 parts, silicon carbide: 19 parts, dodecyl acrylate: 14 parts, alkylphenol polyoxyethylene: 9 parts, toluene: 7 parts, Trimethyllaurylammonium bromide: 5 parts;
Described B component is according to the mass fraction: vinylbenzene: 17 parts, epoxy resin: 45 parts, silicon-dioxide: 9 parts, Rutile type Titanium Dioxide: 14 parts, methacrylic acid: 9 parts, GPES type defoamer: 6 parts.
5., for a thermal treatment process for Heavy Traverse formula shelf high tensile steel plate, it is characterized in that, concrete technology is as follows:
Step (1): the steel plate forged is heated to 1240-1260 DEG C by high-frequency quenching stove, insulation 1-2h, then air cooling is to 940-950 DEG C, adopts the first refrigerating work procedure to be cooled to 620-630 DEG C, then is cooled to room temperature by the second refrigerating work procedure;
Step (2), surface of steel plate is evenly sprayed one deck powdered graphite, thickness is 0.05-0.08mm, then be heated to 530-540 DEG C, insulation 30-40min, reheats to 970-980 DEG C, insulation 2-4h, then adopt nitrogen cooling, be cooled to 420-430 DEG C with the speed of 5-10 DEG C/s, then air cooling is to room temperature;
Step (3): cleaning surface of steel plate, to its surface uniform spraying corrosion-resistant coating, thickness is after 2-3mm, and putting it into envrionment temperature is 40-45 DEG C, and keep 3-4h, then air cooling is to room temperature.
6. the thermal treatment process for Heavy Traverse formula shelf high tensile steel plate according to claim 5: it is characterized in that: described first refrigerating work procedure is: adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 12 DEG C/s, steel plate is cooled to 720 DEG C, adopt water-cooled, with the rate of cooling of 8 DEG C/s, steel plate is chilled to 620-630 DEG C.
7. the thermal treatment process for Heavy Traverse formula shelf high tensile steel plate according to claim 5: it is characterized in that: described second refrigerating work procedure: adopt and to be air-cooledly combined with water-cooled, first adopt and air-cooledly with the rate of cooling of 8 DEG C/s, steel plate is chilled to 360 DEG C, adopt water-cooled, with the rate of cooling of 10 DEG C/s, steel plate is chilled to room temperature.
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| CN106636964A (en) * | 2016-12-15 | 2017-05-10 | 苏州富艾姆工业设备有限公司 | Automobile frame and preparation process thereof |
| CN107554292A (en) * | 2016-06-30 | 2018-01-09 | 宁波高发汽车控制系统股份有限公司 | Electronic accelerator pedal assembly |
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Application publication date: 20150722 |