CN104789901A - High strength steel sheet for heavy mold storage rack and heat treatment technology of high strength steel sheet - Google Patents
High strength steel sheet for heavy mold storage rack and heat treatment technology of high strength steel sheet Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
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- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
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Abstract
The invention discloses a high strength steel sheet for a heavy mold storage rack and a heat treatment technology of the high strength steel sheet. The steel sheet comprises the following ingredients by mass percentage: 0.13-0.15% of carbon, 0.13-0.15% of manganese, 0.54-0.56% of molybdenum, 0.42-0.44% of yttrium, 0.21-0.23% of rhodium, 1.74-1.76% of germanium, 1.82-1.84% of selenium, 0.76-0.79% of rubidium, 4.63-4.67% of cuprum, 0.37-0.39% of aluminum, 13.72-13.75% of chromium, 0.02-0.04% of barium, 8.20-8.22% of nickel, 3.82-3.85% of niobium, 0.46-0.48% of magnesium, 0.02-0.04% of thallium and the balance of Fe and unavoidable impurities. The surface of the steel sheet is coated with a friction resistance alloy coating.
Description
Technical field
The invention belongs to Storage and circulation equipment field, relate to a kind of high tensile steel plate for heavy dies shelf and thermal treatment process 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.
Heavy dies shelf in storage, the usage quantity of steel plate is very large, and it is very strict to the requirement of steel plate, especially for rub resistance ability, the resistance to corrosion and resistance of oxidation etc. of steel plate, these factors directly have influence on the work-ing life of steel plate and the height of cost, so it is high to be badly in need of a kind of intensity, and rub resistance ability and resistance of oxidation, and cost is low, the steel plate of long service life.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, provide a kind of high tensile steel plate for heavy dies shelf and thermal treatment process thereof, not only intensity is high, resistance to corrosion and resistance of oxidation extremely strong, and the rub resistance ability on its surface improves greatly, reduce its wearing and tearing, increase its work-ing life, and thermal treatment process is provided, method is simple, and cost is low, effective.
In order to solve above technical problem, the invention provides a kind of high tensile steel plate for heavy dies shelf, the composition of this steel plate and mass percent are: carbon: 0.13-0.15%, manganese: 0.13-0.15%, molybdenum: 0.54-0.56%, yttrium: 0.42-0.44%, rhodium: 0.21-0.23%, germanium: 1.74-1.76%, selenium: 1.82-1.84%, rubidium: 0.76-0.79%, copper: 4.63-4.67%, aluminium: 0.37-0.39%, chromium: 13.72-13.75%, barium: 0.02-0.04%, nickel: 8.20-8.22%, niobium: 3.82-3.85%, magnesium: 0.46-0.48%, thallium: 0.02-0.04%, surplus is Fe and inevitable impurity,
The surface spraying of steel plate has rub resistance alloy coat, and the composition of rub resistance alloy coat and mass percent are;
Carbon: 0.32-0.34%, manganese: 0.32-0.38%, boron: 0.54-0.56%, barium: 0.22-0.24%, strontium: 0.02-0.04%, bromine: 1.43-1.45%, vanadium: 2.16-2.18%, tungsten: 3.36-3.39%, copper: 0.63-0.67%, chromium: 15.75-15.79%, nickel: 12.5-12.8%, bismuth: 1.42-1.44%, sodium: 3.52-3.58%, surplus is Fe and inevitable impurity.
The present invention is also provided for the thermal treatment process of the high tensile steel plate of heavy dies shelf, and concrete technology is as follows:
Step (1): the steel plate forged is heated to 1170-1175 DEG C by high-frequency quenching stove, insulation 35-40min, then air cooling is to 750-755 DEG C, adopt water-cooled and air-cooled combination, first adopt water-cooled, with the rate of cooling of 6-8 DEG C/s, steel plate is cooled to 520-530 DEG C, adopt the air-cooled rate of cooling with 8-10 DEG C/s that steel plate is chilled to 280-290 DEG C, be then heated to 820-830 DEG C, insulation 42-45min, then air cooling is to room temperature;
Step (2): configuration corrosion resisting alloy coated powder, utilize spraying equipment to surface of steel plate even application 2-4mm alloy coat, then 885-888 DEG C is heated to, pass into helium as shielding gas, keep 2-4h, then steel plate is adopted oil cooling, 510-520 DEG C is cooled to the speed of 12-14 DEG C/s, and then utilize spraying equipment to surface of steel plate even application 3-5mm alloy coat, then be heated to 980-985 DEG C, insulation 1-2h, adopts air-cooled, be cooled to 330-340 DEG C with the speed of 7-8 DEG C/s, then at air cooling to room temperature;
Step (3): surface of steel plate is evenly sprayed one deck ceramic powder, thickness is 1.2-1.4mm, then 390-400 DEG C is heated to, insulation 35-40min, reheat to 680-690 DEG C, insulation 2-4h, then adopts helium gas cooling, be cooled to 280-290 DEG C with the speed of 8-10 DEG C/s, then air cooling is to room temperature;
Step (4): cleaning surface of steel plate.
The technical scheme that the present invention limits further is:
The aforesaid high tensile steel plate for heavy dies shelf, the composition of this steel plate and mass percent are: carbon: 0.13%, manganese: 0.13%, molybdenum: 0.54%, yttrium: 0.42%, rhodium: 0.21%, germanium: 1.74%, selenium: 1.82%, rubidium: 0.76%, copper: 4.63%, aluminium: 0.37%, chromium: 13.72%, barium: 0.02%, nickel: 8.20%, niobium: 3.82%, magnesium: 0.46%, thallium: 0.02%, surplus is Fe and inevitable impurity;
The surface spraying of steel plate has rub resistance alloy coat, and the composition of rub resistance alloy coat and mass percent are;
Carbon: 0.32%, manganese: 0.32%, boron: 0.54%, barium: 0.22%, strontium: 0.02%, bromine: 1.43%, vanadium: 2.16%, tungsten: 3.36%, copper: 0.63%, chromium: 15.75%, nickel: 12.5%, bismuth: 1.42%, sodium: 3.52%, surplus is Fe and inevitable impurity.
The aforesaid high tensile steel plate for heavy dies shelf, the composition of this steel plate and mass percent are: carbon: 0.15%, manganese: 0.15%, molybdenum: 0.56%, yttrium: 0.44%, rhodium: 0.23%, germanium: 1.76%, selenium: 1.84%, rubidium: 0.79%, copper: 4.67%, aluminium: 0.39%, chromium: 13.75%, barium: 0.04%, nickel: 8.22%, niobium: 3.85%, magnesium: 0.48%, thallium: 0.04%, surplus is Fe and inevitable impurity;
The surface spraying of steel plate has rub resistance alloy coat, and the composition of rub resistance alloy coat and mass percent are;
Carbon: 0.34%, manganese: 0.38%, boron: 0.56%, barium: 0.24%, strontium: 0.04%, bromine: 1.45%, vanadium: 2.18%, tungsten: 3.39%, copper: 0.67%, chromium: 15.79%, nickel: 12.8%, bismuth: 1.44%, sodium: 3.58%, surplus is Fe and inevitable impurity.
The aforesaid high tensile steel plate for heavy dies shelf, the composition of this steel plate and mass percent are: carbon: 0.14%, manganese: 0.14%, molybdenum: 0.55%, yttrium: 0.43%, rhodium: 0.22%, germanium: 1.75%, selenium: 1.83%, rubidium: 0.77%, copper: 4.66%, aluminium: 0.38%, chromium: 13.73%, barium: 0.03%, nickel: 8.21%, niobium: 3.83%, magnesium: 0.47%, thallium: 0.03%, surplus is Fe and inevitable impurity;
The surface spraying of steel plate has rub resistance alloy coat, and the composition of rub resistance alloy coat and mass percent are;
Carbon: 0.33%, manganese: 0.37%, boron: 0.55%, barium: 0.23%, strontium: 0.03%, bromine: 1.44%, vanadium: 2.17%, tungsten: 3.38%, copper: 0.66%, chromium: 15.77%, nickel: 12.6%, bismuth: 1.43%, sodium: 3.56%, surplus is Fe and inevitable impurity.
The invention has the beneficial effects as follows: this steel plate not only intensity is high, resistance to corrosion and resistance of oxidation extremely strong, and the rub resistance ability on its surface improves greatly, reduce its wearing and tearing, increase its work-ing life, and thermal treatment process is provided, method is simple, and cost is low, effective; Rubidium element is added in its light plate, erosion resistance and intensity can be improved, add molybdenum element, energy crystal grain thinning in thermal treatment, can strengthen its intensity, toughness, anticorrosive, the wear-resisting and load that withstands shocks etc., add element Ge, energy crystal grain thinning and its superheated susceptivity of reduction and temper brittleness, improve intensity, resistant to hydrogen under weather-resistant and high temperature, nitrogen, ammonia corrosion can be improved, add chromium and micro-Ni element, its wear-resisting ability ability can be improved and increase its intensity, improve its fusing point, increase ability and the resistance of oxidation of high temperature resistance; Also scribble one deck rub resistance alloy material at surface of steel plate, and add vanadium, tungsten, bismuth element, can in heat treatment process crystal grain thinning, form fine and close crystalline structure, increase intensity and the crocking resistance of steel plate,
And pass through thermal treatment process; first spray one deck ceramic powder on its surface, increase the rub resistance ability on its surface, not only surperficial beautiful; crocking resistance is strong; the work-ing life of steel plate can be increased, reduce costs, and pass into helium as shielding gas; the effect of crystal grain thinning can be played; prevent crackle and pore, increase intensity and the work-ing life of steel plate, improve its comprehensive mechanical performance.
Embodiment
embodiment 1
A kind of high tensile steel plate for heavy dies shelf that the present embodiment provides, the composition of this steel plate and mass percent are: carbon: 0.13%, manganese: 0.13%, molybdenum: 0.54%, yttrium: 0.42%, rhodium: 0.21%, germanium: 1.74%, selenium: 1.82%, rubidium: 0.76%, copper: 4.63%, aluminium: 0.37%, chromium: 13.72%, barium: 0.02%, nickel: 8.20%, niobium: 3.82%, magnesium: 0.46%, thallium: 0.02%, surplus is Fe and inevitable impurity;
The surface spraying of steel plate has rub resistance alloy coat, and the composition of rub resistance alloy coat and mass percent are;
Carbon: 0.32%, manganese: 0.32%, boron: 0.54%, barium: 0.22%, strontium: 0.02%, bromine: 1.43%, vanadium: 2.16%, tungsten: 3.36%, copper: 0.63%, chromium: 15.75%, nickel: 12.5%, bismuth: 1.42%, sodium: 3.52%, surplus is Fe and inevitable impurity.
The present embodiment is also provided for the thermal treatment process of the high tensile steel plate of heavy dies shelf, and concrete technology is as follows:
Step (1): the steel plate forged is heated to 1170 DEG C by high-frequency quenching stove, insulation 35min, then air cooling to 750 DEG C, adopt water-cooled and air-cooled combination, first adopt water-cooled, with the rate of cooling of 6 DEG C/s, steel plate is cooled to 520 DEG C, adopt and air-cooledly with the rate of cooling of 8 DEG C/s, steel plate is chilled to 280 DEG C, be then heated to 820 DEG C, insulation 42min, then air cooling is to room temperature;
Step (2): configuration corrosion resisting alloy coated powder, utilizes spraying equipment to surface of steel plate even application 2mm alloy coat, be then heated to 885 DEG C, pass into helium as shielding gas, keep 2h, then steel plate is adopted oil cooling, be cooled to 510 DEG C with the speed of 12 DEG C/s, and then utilize spraying equipment to surface of steel plate even application 3mm alloy coat, then be heated to 980 DEG C, insulation 1h, adopts air-cooled, be cooled to 330 DEG C with the speed of 7 DEG C/s, then at air cooling to room temperature;
Step (3): surface of steel plate is evenly sprayed one deck ceramic powder, thickness is 1.2mm, is then heated to 390 DEG C, and insulation 35min, reheats to 680 DEG C, insulation 2h, and then adopt helium gas cooling, be cooled to 280 DEG C with the speed of 8 DEG C/s, then air cooling is to room temperature;
Step (4): cleaning surface of steel plate.
embodiment 2
A kind of high tensile steel plate for heavy dies shelf that the present embodiment provides, the composition of this steel plate and mass percent are: carbon: 0.15%, manganese: 0.15%, molybdenum: 0.56%, yttrium: 0.44%, rhodium: 0.23%, germanium: 1.76%, selenium: 1.84%, rubidium: 0.79%, copper: 4.67%, aluminium: 0.39%, chromium: 13.75%, barium: 0.04%, nickel: 8.22%, niobium: 3.85%, magnesium: 0.48%, thallium: 0.04%, surplus is Fe and inevitable impurity;
The surface spraying of steel plate has rub resistance alloy coat, and the composition of rub resistance alloy coat and mass percent are;
Carbon: 0.34%, manganese: 0.38%, boron: 0.56%, barium: 0.24%, strontium: 0.04%, bromine: 1.45%, vanadium: 2.18%, tungsten: 3.39%, copper: 0.67%, chromium: 15.79%, nickel: 12.8%, bismuth: 1.44%, sodium: 3.58%, surplus is Fe and inevitable impurity.
The present embodiment is also provided for the thermal treatment process of the high tensile steel plate of heavy dies shelf, and concrete technology is as follows:
Step (1): the steel plate forged is heated to 1175 DEG C by high-frequency quenching stove, insulation 40min, then air cooling to 755 DEG C, adopt water-cooled and air-cooled combination, first adopt water-cooled, with the rate of cooling of 8 DEG C/s, steel plate is cooled to 530 DEG C, adopt and air-cooledly with the rate of cooling of 10 DEG C/s, steel plate is chilled to 290 DEG C, be then heated to 830 DEG C, insulation 45min, then air cooling is to room temperature;
Step (2): configuration corrosion resisting alloy coated powder, utilizes spraying equipment to surface of steel plate even application 4mm alloy coat, be then heated to 888 DEG C, pass into helium as shielding gas, keep 4h, then steel plate is adopted oil cooling, be cooled to 520 DEG C with the speed of 14 DEG C/s, and then utilize spraying equipment to surface of steel plate even application 5mm alloy coat, then be heated to 985 DEG C, insulation 2h, adopts air-cooled, be cooled to 340 DEG C with the speed of 8 DEG C/s, then at air cooling to room temperature;
Step (3): surface of steel plate is evenly sprayed one deck ceramic powder, thickness is 1.4mm, is then heated to 400 DEG C, insulation 40min, reheats to 690 DEG C, insulation 4h, then adopt helium gas cooling, be cooled to 290 DEG C with the speed of 10 DEG C/s, then air cooling is to room temperature;
Step (4): cleaning surface of steel plate.
embodiment 3
A kind of high tensile steel plate for heavy dies shelf that the present embodiment provides, the composition of this steel plate and mass percent are: carbon: 0.14%, manganese: 0.14%, molybdenum: 0.55%, yttrium: 0.43%, rhodium: 0.22%, germanium: 1.75%, selenium: 1.83%, rubidium: 0.77%, copper: 4.66%, aluminium: 0.38%, chromium: 13.73%, barium: 0.03%, nickel: 8.21%, niobium: 3.83%, magnesium: 0.47%, thallium: 0.03%, surplus is Fe and inevitable impurity;
The surface spraying of steel plate has rub resistance alloy coat, and the composition of rub resistance alloy coat and mass percent are;
Carbon: 0.33%, manganese: 0.37%, boron: 0.55%, barium: 0.23%, strontium: 0.03%, bromine: 1.44%, vanadium: 2.17%, tungsten: 3.38%, copper: 0.66%, chromium: 15.77%, nickel: 12.6%, bismuth: 1.43%, sodium: 3.56%, surplus is Fe and inevitable impurity.
The present embodiment is also provided for the thermal treatment process of the high tensile steel plate of heavy dies shelf, and concrete technology is as follows:
Step (1): the steel plate forged is heated to 1172 DEG C by high-frequency quenching stove, insulation 38min, then air cooling to 752 DEG C, adopt water-cooled and air-cooled combination, first adopt water-cooled, with the rate of cooling of 7 DEG C/s, steel plate is cooled to 525 DEG C, adopt and air-cooledly with the rate of cooling of 9 DEG C/s, steel plate is chilled to 285 DEG C, be then heated to 828 DEG C, insulation 43min, then air cooling is to room temperature;
Step (2): configuration corrosion resisting alloy coated powder, utilize spraying equipment to surface of steel plate even application 3mm alloy coat, then 887 DEG C are heated to, pass into helium as shielding gas, keep 3h, then steel plate is adopted oil cooling, 515 DEG C are cooled to the speed of 13 DEG C/s, and then utilize spraying equipment to surface of steel plate even application 4mm alloy coat, then be heated to 982 DEG C, insulation 1.5h, adopts air-cooled, be cooled to 335 DEG C with the speed of 7 DEG C/s, then at air cooling to room temperature;
Step (3): surface of steel plate is evenly sprayed one deck ceramic powder, thickness is 1.3mm, is then heated to 398 DEG C, and insulation 38min, reheats to 684 DEG C, insulation 3h, and then adopt helium gas cooling, be cooled to 288 DEG C with the speed of 9 DEG C/s, then air cooling is to room temperature;
Step (4): cleaning surface of steel plate.
The performance of each embodiment steel plate is as shown in table 1:
The performance of each embodiment steel plate of table 1
| Embodiment | Tensile strength, MPa | Yield strength, MPa | Unit elongation, % | Thickness direction relative reduction in area, % | SSC |
| Embodiment 1 | 430 | 320 | 33 | 62.7 | Flawless |
| Embodiment 2 | 439 | 291 | 30 | 64.3 | Flawless |
| Embodiment 3 | 437 | 310 | 32 | 71.1 | Flawless |
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 (5)
1. the high tensile steel plate for heavy dies shelf, it is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.13-0.15%, manganese: 0.13-0.15%, molybdenum: 0.54-0.56%, yttrium: 0.42-0.44%, rhodium: 0.21-0.23%, germanium: 1.74-1.76%, selenium: 1.82-1.84%, rubidium: 0.76-0.79%, copper: 4.63-4.67%, aluminium: 0.37-0.39%, chromium: 13.72-13.75%, barium: 0.02-0.04%, nickel: 8.20-8.22%, niobium: 3.82-3.85%, magnesium: 0.46-0.48%, thallium: 0.02-0.04%, surplus is Fe and inevitable impurity,
The surface spraying of described steel plate has rub resistance alloy coat, and composition and the mass percent of described rub resistance alloy coat are;
Carbon: 0.32-0.34%, manganese: 0.32-0.38%, boron: 0.54-0.56%, barium: 0.22-0.24%, strontium: 0.02-0.04%, bromine: 1.43-1.45%, vanadium: 2.16-2.18%, tungsten: 3.36-3.39%, copper: 0.63-0.67%, chromium: 15.75-15.79%, nickel: 12.5-12.8%, bismuth: 1.42-1.44%, sodium: 3.52-3.58%, surplus is Fe and inevitable impurity.
2. the high tensile steel plate for heavy dies shelf according to claim 1, is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.13%, manganese: 0.13%, molybdenum: 0.54%, yttrium: 0.42%, rhodium: 0.21%, germanium: 1.74%, selenium: 1.82%, rubidium: 0.76%, copper: 4.63%, aluminium: 0.37%, chromium: 13.72%, barium: 0.02%, nickel: 8.20%, niobium: 3.82%, magnesium: 0.46%, thallium: 0.02%, surplus is Fe and inevitable impurity;
The surface spraying of described steel plate has rub resistance alloy coat, and composition and the mass percent of described rub resistance alloy coat are;
Carbon: 0.32%, manganese: 0.32%, boron: 0.54%, barium: 0.22%, strontium: 0.02%, bromine: 1.43%, vanadium: 2.16%, tungsten: 3.36%, copper: 0.63%, chromium: 15.75%, nickel: 12.5%, bismuth: 1.42%, sodium: 3.52%, surplus is Fe and inevitable impurity.
3. the high tensile steel plate for heavy dies shelf according to claim 1, is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.15%, manganese: 0.15%, molybdenum: 0.56%, yttrium: 0.44%, rhodium: 0.23%, germanium: 1.76%, selenium: 1.84%, rubidium: 0.79%, copper: 4.67%, aluminium: 0.39%, chromium: 13.75%, barium: 0.04%, nickel: 8.22%, niobium: 3.85%, magnesium: 0.48%, thallium: 0.04%, surplus is Fe and inevitable impurity;
The surface spraying of described steel plate has rub resistance alloy coat, and composition and the mass percent of described rub resistance alloy coat are;
Carbon: 0.34%, manganese: 0.38%, boron: 0.56%, barium: 0.24%, strontium: 0.04%, bromine: 1.45%, vanadium: 2.18%, tungsten: 3.39%, copper: 0.67%, chromium: 15.79%, nickel: 12.8%, bismuth: 1.44%, sodium: 3.58%, surplus is Fe and inevitable impurity.
4. the high tensile steel plate for heavy dies shelf according to claim 1, is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.14%, manganese: 0.14%, molybdenum: 0.55%, yttrium: 0.43%, rhodium: 0.22%, germanium: 1.75%, selenium: 1.83%, rubidium: 0.77%, copper: 4.66%, aluminium: 0.38%, chromium: 13.73%, barium: 0.03%, nickel: 8.21%, niobium: 3.83%, magnesium: 0.47%, thallium: 0.03%, surplus is Fe and inevitable impurity;
The surface spraying of described steel plate has rub resistance alloy coat, and composition and the mass percent of described rub resistance alloy coat are;
Carbon: 0.33%, manganese: 0.37%, boron: 0.55%, barium: 0.23%, strontium: 0.03%, bromine: 1.44%, vanadium: 2.17%, tungsten: 3.38%, copper: 0.66%, chromium: 15.77%, nickel: 12.6%, bismuth: 1.43%, sodium: 3.56%, surplus is Fe and inevitable impurity.
5. for a thermal treatment process for the high tensile steel plate of heavy dies shelf, it is characterized in that, concrete technology is as follows:
Step (1): the steel plate forged is heated to 1170-1175 DEG C by high-frequency quenching stove, insulation 35-40min, then air cooling is to 750-755 DEG C, adopt water-cooled and air-cooled combination, first adopt water-cooled, with the rate of cooling of 6-8 DEG C/s, steel plate is cooled to 520-530 DEG C, adopt the air-cooled rate of cooling with 8-10 DEG C/s that steel plate is chilled to 280-290 DEG C, be then heated to 820-830 DEG C, insulation 42-45min, then air cooling is to room temperature;
Step (2): configuration corrosion resisting alloy coated powder, utilize spraying equipment to surface of steel plate even application 2-4mm alloy coat, then 885-888 DEG C is heated to, pass into helium as shielding gas, keep 2-4h, then steel plate is adopted oil cooling, 510-520 DEG C is cooled to the speed of 12-14 DEG C/s, and then utilize spraying equipment to surface of steel plate even application 3-5mm alloy coat, then be heated to 980-985 DEG C, insulation 1-2h, adopts air-cooled, be cooled to 330-340 DEG C with the speed of 7-8 DEG C/s, then at air cooling to room temperature;
Step (3): surface of steel plate is evenly sprayed one deck ceramic powder, thickness is 1.2-1.4mm, then 390-400 DEG C is heated to, insulation 35-40min, reheat to 680-690 DEG C, insulation 2-4h, then adopts helium gas cooling, be cooled to 280-290 DEG C with the speed of 8-10 DEG C/s, then air cooling is to room temperature;
Step (4): cleaning surface of steel plate.
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| CN106591738A (en) * | 2016-12-14 | 2017-04-26 | 苏州科胜仓储物流设备有限公司 | Light type high-strength steel plate for goods shelf and heat treatment process of light type high-strength steel plate |
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