CN104789888A - High strength steel sheet for middle-sized storage rack and forging technology of high strength steel sheet - Google Patents
High strength steel sheet for middle-sized storage rack and forging technology of high strength steel sheet Download PDFInfo
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- CN104789888A CN104789888A CN201510123552.6A CN201510123552A CN104789888A CN 104789888 A CN104789888 A CN 104789888A CN 201510123552 A CN201510123552 A CN 201510123552A CN 104789888 A CN104789888 A CN 104789888A
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Abstract
The invention discloses a high strength steel sheet for a middle-sized storage rack and a forging technology of the high strength steel sheet. The steel sheet comprises the following ingredients by mass percentage: 0.56-0.58% of carbon, 0.04-0.06% of manganese, 0.94-0.96% of titanium, 0.02-0.04% of cobalt, 0.07-0.09% of sodium, 0.23-0.25% of scandium, 2.16-2.18% of vanadium, 2.36-2.39% of rubidium, 2.03-2.05% of cuprum, 0.57-0.59% of niobium, 2.7-2.9% of chromium, 0.02-0.04% of molybdenum, 1.11-1.13% of nickel, 0.36-0.38% of neodymium, 2.42-2.44% of praseodymium, 0.85-0.86% of cerium, 3.2-3.6% of samarium, 4.2-4.5% of lutetium, 1.3-1.5% of erbium 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 medium-sized goods shelf and forging 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.
The application of medium-sized goods shelf in storage is also quite extensive, and medium-sized goods shelf has good looking appearance, and assembling is simple, good stability, medium-sized goods shelf steel plate is non-bolted joint, and assembling, dismounting are simply, layer loading capability is large, but due to the defect of steel plate itself, as: easily wear and tear in surface, intensity is low, and work-ing life is short, and resistance of oxidation is poor, iron rust can be produced for a long time, not only affect attractive in appearance, but also destroy structural strength, reduce work-ing life etc.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, a kind of high tensile steel plate for medium-sized goods shelf and forging process thereof are provided, not only intensity is high, and resistance to corrosion and resistance of oxidation significantly improve, and the rub resistance ability on its surface improves greatly, reduce its wearing and tearing, increase its work-ing life, reduce costs, guarantee the safety and reliability in use procedure.
In order to solve above technical problem, the invention provides a kind of high tensile steel plate for medium-sized goods shelf, the composition of this steel plate and mass percent are: carbon: 0.56-0.58%, manganese: 0.04-0.06%, titanium: 0.94-0.96%, cobalt: 0.02-0.04%, sodium: 0.07-0.09%, scandium: 0.23-0.25%, vanadium: 2.16-2.18%, rubidium: 2.36-2.39%, copper: 2.03-2.05%, niobium: 0.57-0.59%, chromium: 2.7-2.9%, molybdenum: 0.02-0.04%, nickel: 1.11-1.13%, neodymium: 0.36-0.38%, praseodymium: 2.42-2.44%, cerium: 0.85-0.86%, samarium: 3.2-3.6%, lutetium: 4.2-4.5%, erbium: 1.3-1.5%, surplus is Fe and inevitable impurity,
In this steel plate, first-phase is perlite, and second-phase is cementite, and at thickness place, surface to 1/4, second-phase percent by volume is 7.4-7.6%, and 1/3 thickness is 6.3-6.5% to center second-phase percent by volume, and without banded structure;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 65-67 part, bisphenol A epoxide resin: 46-48 part, Isooctyl acrylate monomer: 20-23 part, isoprene-isobutylene rubber: 12-14 part, ceramics powder: 7-9 part, tetrachloroethylene: 5-8 part, toluene: 1-3 part, GPES type defoamer: 3-5 part; Bisphenol F epoxy resin: 24-26 part, pearlescence: 10-12 part, silicon-dioxide: 8-9 part, methacrylic acid: 10-12 part, antioxidant 264: 12-14 part, dibutyl phthalate: 5-7 part;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
The present invention is also provided for the forging process of the high tensile steel plate of medium-sized goods shelf, and concrete technology is as follows:
Step (1): in arc furnace smelting procedure, after first furnace temperature being risen to 780-785 DEG C, proportionally adds steel plate alloy material, then temperature is risen to 1250-1260 DEG C, insulation 1-2h;
Step (2): through the refining of LF stove, refining temperature is 1410-1420 DEG C, and composition is finely tuned, insulation 3-5h, and omnidistance nitrogen blowing stirs, and makes Chemical Composition reach component requirements, then cools the temperature to as 570-580 DEG C;
Step (3): carry out degassed with vacuum degassing furnace, degassing temperature is 1250-1310 DEG C, vacuum tightness 48-50 handkerchief, and pumpdown time is at 2-4h;
Step (4): carry out helium protection die casting at the temperature of 1385-1390 DEG C, after solidifying, temperature is remained on 750-760 DEG C, soaking time is 45-55h, and last air cooling is to room temperature;
Step (5): the steel plate forged is carried out first time thermal treatment: steel plate is put into process furnace and is heated to 680-690 DEG C, insulation 30-45min, then with air-cooled with the speed cool to room temperature of 5-8 DEG C/s, and then be heated to 870-880 DEG C, adopt oil cooling, be cooled to room temperature with the speed of 13-15 DEG C/s;
Step (6): the steel plate forged is carried out second time thermal treatment: steel plate is put into process furnace and is heated to 880-890 DEG C, insulation 30-45min, then use water-cooled with the speed cool to room temperature of 10-12 DEG C/s, and then be heated to 670-680 DEG C, adopt oil cooling, 320-330 DEG C is cooled to the speed of 13-15 DEG C/s, then to its surface spraying graphite grinding, thickness is 0.65-0.85mm, is then heated to 700-710 DEG C, insulation 1-2h, then air cooling is to room temperature;
Step (7): cleaning surface of steel plate, configuration corrosion-resistant coating, utilize spraying equipment to spray corrosion-resistant coating to surface of steel plate, thickness is 3-5mm, and then putting into envrionment temperature is 58-60 DEG C, and insulation 2-5h, then air cooling is to room temperature.
The technical scheme that the present invention limits further is:
The aforesaid high tensile steel plate for medium-sized goods shelf, the composition of this steel plate and mass percent are: carbon: 0.56%, manganese: 0.04%, titanium: 0.94%, cobalt: 0.02%, sodium: 0.07%, scandium: 0.23%, vanadium: 2.16%, rubidium: 2.36%, copper: 2.03%, niobium: 0.57%, chromium: 2.7%, molybdenum: 0.02%, nickel: 1.11%, neodymium: 0.36%, praseodymium: 2.42%, cerium: 0.85%, samarium: 3.2%, lutetium: 4.2%, erbium: 1.3%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.4%, 1/3 thickness is 6.3% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 65 parts, bisphenol A epoxide resin: 46 parts, Isooctyl acrylate monomer: 20 parts, isoprene-isobutylene rubber: 12 parts, ceramics powder: 7 parts, tetrachloroethylene: 5 parts, toluene: 1 part, GPES type defoamer: 3 parts; Bisphenol F epoxy resin: 24 parts, pearlescence: 10 parts, silicon-dioxide: 8 parts, methacrylic acid: 10 parts, antioxidant 264: 12 parts, dibutyl phthalate: 5 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
The aforesaid high tensile steel plate for medium-sized goods shelf, the composition of this steel plate and mass percent are: carbon: 0.58%, manganese: 0.06%, titanium: 0.96%, cobalt: 0.04%, sodium: 0.09%, scandium: 0.25%, vanadium: 2.18%, rubidium: 2.39%, copper: 2.05%, niobium: 0.59%, chromium: 2.9%, molybdenum: 0.04%, nickel: 1.13%, neodymium: 0.38%, praseodymium: 2.44%, cerium: 0.86%, samarium: 3.6%, lutetium: 4.5%, erbium: 1.5%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.6%, 1/3 thickness is 6.5% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 67 parts, bisphenol A epoxide resin: 48 parts, Isooctyl acrylate monomer: 23 parts, isoprene-isobutylene rubber: 14 parts, ceramics powder: 9 parts, tetrachloroethylene: 8 parts, toluene: 3 parts, GPES type defoamer: 5 parts; Bisphenol F epoxy resin: 26 parts, pearlescence: 12 parts, silicon-dioxide: 9 parts, methacrylic acid: 12 parts, antioxidant 264: 14 parts, dibutyl phthalate: 7 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
The aforesaid high tensile steel plate for medium-sized goods shelf, the composition of this steel plate and mass percent are: carbon: 0.57%, manganese: 0.05%, titanium: 0.95%, cobalt: 0.03%, sodium: 0.08%, scandium: 0.24%, vanadium: 2.17%, rubidium: 2.38%, copper: 2.04%, niobium: 0.58%, chromium: 2.8%, molybdenum: 0.03%, nickel: 1.12%, neodymium: 0.37%, praseodymium: 2.43%, cerium: 0.85%, samarium: 3.4%, lutetium: 4.3%, erbium: 1.4%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.5%, 1/3 thickness is 6.4% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 66 parts, bisphenol A epoxide resin: 47 parts, Isooctyl acrylate monomer: 22 parts, isoprene-isobutylene rubber: 13 parts, ceramics powder: 8 parts, tetrachloroethylene: 7 parts, toluene: 2 parts, GPES type defoamer: 4 parts; Bisphenol F epoxy resin: 25 parts, pearlescence: 11 parts, silicon-dioxide: 8 parts, methacrylic acid: 11 parts, antioxidant 264: 13 parts, dibutyl phthalate: 6 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
The invention has the beneficial effects as follows: steel plate not only intensity is high, resistance of oxidation and corrosion resistance significantly improve, and the rub resistance ability on its surface improves greatly, reduce its wearing and tearing, increase its work-ing life, reduce costs; Wherein add titanium elements, erosion resistance and intensity can be improved, add scandium element, energy crystal grain thinning in forging, can strengthen its intensity, toughness, anticorrosive, the wear-resisting and load that withstands shocks etc., add copper, 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;
And the neodymium, praseodymium, cerium, samarium, lutetium and the er element that add in rare earth element, in forging process, be conducive to crystal grain thinning, form fine and close grain structure, increase the intensity of its entirety; Pass through forging process, adopt vacuum outgas, can prevent steel plate inside from occurring pore and crackle, increase its intensity, and carry out twice thermal treatment after forging, can improve steel plate comprehensive mechanical system can, improve that it is corrosion-resistant, rub resistance ability, increase its work-ing life, reduce costs, surface of steel plate also has corrosion-resistant coating, increases the corrosion resistance of steel plate further, good looking appearance.
Embodiment
embodiment 1
A kind of high tensile steel plate for medium-sized goods shelf that the present embodiment provides, the composition of this steel plate and mass percent are: carbon: 0.56%, manganese: 0.04%, titanium: 0.94%, cobalt: 0.02%, sodium: 0.07%, scandium: 0.23%, vanadium: 2.16%, rubidium: 2.36%, copper: 2.03%, niobium: 0.57%, chromium: 2.7%, molybdenum: 0.02%, nickel: 1.11%, neodymium: 0.36%, praseodymium: 2.42%, cerium: 0.85%, samarium: 3.2%, lutetium: 4.2%, erbium: 1.3%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.4%, 1/3 thickness is 6.3% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 65 parts, bisphenol A epoxide resin: 46 parts, Isooctyl acrylate monomer: 20 parts, isoprene-isobutylene rubber: 12 parts, ceramics powder: 7 parts, tetrachloroethylene: 5 parts, toluene: 1 part, GPES type defoamer: 3 parts; Bisphenol F epoxy resin: 24 parts, pearlescence: 10 parts, silicon-dioxide: 8 parts, methacrylic acid: 10 parts, antioxidant 264: 12 parts, dibutyl phthalate: 5 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
The present embodiment is also provided for the forging process of the high tensile steel plate of medium-sized goods shelf, and concrete technology is as follows:
Step (1): in arc furnace smelting procedure, after first furnace temperature being risen to 780 DEG C, proportionally adds steel plate alloy material, then temperature is risen to 1250 DEG C, insulation 1h;
Step (2): through the refining of LF stove, refining temperature is 1410 DEG C, and composition is finely tuned, insulation 3h, and omnidistance nitrogen blowing stirs, and make Chemical Composition reach component requirements, then cooling the temperature to is 570 DEG C;
Step (3): carry out degassed with vacuum degassing furnace, degassing temperature is 1250 DEG C, vacuum tightness 48 handkerchief, and pumpdown time is at 2h;
Step (4): carry out helium protection die casting at the temperature of 1385 DEG C, after solidifying, temperature is remained on 750 DEG C, soaking time is 45h, and last air cooling is to room temperature;
Step (5): the steel plate forged is carried out first time thermal treatment: steel plate is put into process furnace and be heated to 680 DEG C, insulation 30min, then with air-cooled with the speed cool to room temperature of 5 DEG C/s, and then be heated to 870 DEG C, adopt oil cooling, be cooled to room temperature with the speed of 13 DEG C/s;
Step (6): the steel plate forged is carried out second time thermal treatment: steel plate is put into process furnace and be heated to 880 DEG C, insulation 30min, then use water-cooled with the speed cool to room temperature of 10 DEG C/s, and then be heated to 670 DEG C, adopt oil cooling, 320 DEG C are cooled to the speed of 13 DEG C/s, then to its surface spraying graphite grinding, thickness is 0.65mm, is then heated to 700 DEG C, insulation 1h, then air cooling is to room temperature;
Step (7): cleaning surface of steel plate, configuration corrosion-resistant coating, utilize spraying equipment to spray corrosion-resistant coating to surface of steel plate, thickness is 3mm, and then putting into envrionment temperature is 58 DEG C, and insulation 2h, then air cooling is to room temperature.
embodiment 2
A kind of high tensile steel plate for medium-sized goods shelf that the present embodiment provides, the composition of this steel plate and mass percent are: carbon: 0.58%, manganese: 0.06%, titanium: 0.96%, cobalt: 0.04%, sodium: 0.09%, scandium: 0.25%, vanadium: 2.18%, rubidium: 2.39%, copper: 2.05%, niobium: 0.59%, chromium: 2.9%, molybdenum: 0.04%, nickel: 1.13%, neodymium: 0.38%, praseodymium: 2.44%, cerium: 0.86%, samarium: 3.6%, lutetium: 4.5%, erbium: 1.5%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.6%, 1/3 thickness is 6.5% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 67 parts, bisphenol A epoxide resin: 48 parts, Isooctyl acrylate monomer: 23 parts, isoprene-isobutylene rubber: 14 parts, ceramics powder: 9 parts, tetrachloroethylene: 8 parts, toluene: 3 parts, GPES type defoamer: 5 parts; Bisphenol F epoxy resin: 26 parts, pearlescence: 12 parts, silicon-dioxide: 9 parts, methacrylic acid: 12 parts, antioxidant 264: 14 parts, dibutyl phthalate: 7 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
The present embodiment is also provided for the forging process of the high tensile steel plate of medium-sized goods shelf, and concrete technology is as follows:
Step (1): in arc furnace smelting procedure, after first furnace temperature being risen to 785 DEG C, proportionally adds steel plate alloy material, then temperature is risen to 1260 DEG C, insulation 2h;
Step (2): through the refining of LF stove, refining temperature is 1420 DEG C, and composition is finely tuned, insulation 5h, and omnidistance nitrogen blowing stirs, and make Chemical Composition reach component requirements, then cooling the temperature to is 580 DEG C;
Step (3): carry out degassed with vacuum degassing furnace, degassing temperature is 1310 DEG C, vacuum tightness 50 handkerchief, and pumpdown time is at 4h;
Step (4): carry out helium protection die casting at the temperature of 1390 DEG C, after solidifying, temperature is remained on 760 DEG C, soaking time is 55h, and last air cooling is to room temperature;
Step (5): the steel plate forged is carried out first time thermal treatment: steel plate is put into process furnace and be heated to 690 DEG C, insulation 45min, then with air-cooled with the speed cool to room temperature of 8 DEG C/s, and then be heated to 880 DEG C, adopt oil cooling, be cooled to room temperature with the speed of 15 DEG C/s;
Step (6): the steel plate forged is carried out second time thermal treatment: steel plate is put into process furnace and be heated to 890 DEG C, insulation 45min, then use water-cooled with the speed cool to room temperature of 12 DEG C/s, and then be heated to 680 DEG C, adopt oil cooling, 330 DEG C are cooled to the speed of 15 DEG C/s, then to its surface spraying graphite grinding, thickness is 0.85mm, is then heated to 710 DEG C, insulation 2h, then air cooling is to room temperature;
Step (7): cleaning surface of steel plate, configuration corrosion-resistant coating, utilize spraying equipment to spray corrosion-resistant coating to surface of steel plate, thickness is 5mm, and then putting into envrionment temperature is 60 DEG C, and insulation 5h, then air cooling is to room temperature.
embodiment 3
A kind of high tensile steel plate for medium-sized goods shelf that the present embodiment provides, the composition of this steel plate and mass percent are: carbon: 0.57%, manganese: 0.05%, titanium: 0.95%, cobalt: 0.03%, sodium: 0.08%, scandium: 0.24%, vanadium: 2.17%, rubidium: 2.38%, copper: 2.04%, niobium: 0.58%, chromium: 2.8%, molybdenum: 0.03%, nickel: 1.12%, neodymium: 0.37%, praseodymium: 2.43%, cerium: 0.85%, samarium: 3.4%, lutetium: 4.3%, erbium: 1.4%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.5%, 1/3 thickness is 6.4% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of steel plate has corrosion-resistant coating, and corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 66 parts, bisphenol A epoxide resin: 47 parts, Isooctyl acrylate monomer: 22 parts, isoprene-isobutylene rubber: 13 parts, ceramics powder: 8 parts, tetrachloroethylene: 7 parts, toluene: 2 parts, GPES type defoamer: 4 parts; Bisphenol F epoxy resin: 25 parts, pearlescence: 11 parts, silicon-dioxide: 8 parts, methacrylic acid: 11 parts, antioxidant 264: 13 parts, dibutyl phthalate: 6 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
The present embodiment is also provided for the forging process of the high tensile steel plate of medium-sized goods shelf, and concrete technology is as follows:
Step (1): in arc furnace smelting procedure, after first furnace temperature being risen to 782 DEG C, proportionally adds steel plate alloy material, then temperature is risen to 1258 DEG C, insulation 1.8h;
Step (2): through the refining of LF stove, refining temperature is 1415 DEG C, and composition is finely tuned, insulation 4h, and omnidistance nitrogen blowing stirs, and make Chemical Composition reach component requirements, then cooling the temperature to is 577 DEG C;
Step (3): carry out degassed with vacuum degassing furnace, degassing temperature is 1260 DEG C, vacuum tightness 49 handkerchief, and pumpdown time is at 3h;
Step (4): carry out helium protection die casting at the temperature of 1388 DEG C, after solidifying, temperature is remained on 757 DEG C, soaking time is 48h, and last air cooling is to room temperature;
Step (5): the steel plate forged is carried out first time thermal treatment: steel plate is put into process furnace and be heated to 687 DEG C, insulation 38min, then with air-cooled with the speed cool to room temperature of 7 DEG C/s, and then be heated to 878 DEG C, adopt oil cooling, be cooled to room temperature with the speed of 14 DEG C/s;
Step (6): the steel plate forged is carried out second time thermal treatment: steel plate is put into process furnace and be heated to 887 DEG C, insulation 36min, then use water-cooled with the speed cool to room temperature of 11 DEG C/s, and then be heated to 678 DEG C, adopt oil cooling, 328 DEG C are cooled to the speed of 14 DEG C/s, then to its surface spraying graphite grinding, thickness is 0.75mm, is then heated to 705 DEG C, insulation 1.6h, then air cooling is to room temperature;
Step (7): cleaning surface of steel plate, configuration corrosion-resistant coating, utilize spraying equipment to spray corrosion-resistant coating to surface of steel plate, thickness is 4mm, and then putting into envrionment temperature is 59 DEG C, and insulation 4h, then air cooling is to room temperature.
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, % | -20 DEG C of Charpy-V impact powers, J | CLR, % | CTR, % | CSR,% | SSC |
| Embodiment 1 | 432 | 328 | 32 | 61 | 210 | 0 | 0 | 0 | Flawless |
| Embodiment 2 | 441 | 302 | 33 | 64 | 230 | 0 | 0 | 0 | Flawless |
| Embodiment 3 | 450 | 338 | 35 | 72 | 235 | 0 | 0 | 0 | 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 medium-sized goods shelf, it is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.56-0.58%, manganese: 0.04-0.06%, titanium: 0.94-0.96%, cobalt: 0.02-0.04%, sodium: 0.07-0.09%, scandium: 0.23-0.25%, vanadium: 2.16-2.18%, rubidium: 2.36-2.39%, copper: 2.03-2.05%, niobium: 0.57-0.59%, chromium: 2.7-2.9%, molybdenum: 0.02-0.04%, nickel: 1.11-1.13%, neodymium: 0.36-0.38%, praseodymium: 2.42-2.44%, cerium: 0.85-0.86%, samarium: 3.2-3.6%, lutetium: 4.2-4.5%, erbium: 1.3-1.5%, surplus is Fe and inevitable impurity,
In this steel plate, first-phase is perlite, and second-phase is cementite, and at thickness place, surface to 1/4, second-phase percent by volume is 7.4-7.6%, and 1/3 thickness is 6.3-6.5% to center second-phase percent by volume, and without banded structure;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 65-67 part, bisphenol A epoxide resin: 46-48 part, Isooctyl acrylate monomer: 20-23 part, isoprene-isobutylene rubber: 12-14 part, ceramics powder: 7-9 part, tetrachloroethylene: 5-8 part, toluene: 1-3 part, GPES type defoamer: 3-5 part; Bisphenol F epoxy resin: 24-26 part, pearlescence: 10-12 part, silicon-dioxide: 8-9 part, methacrylic acid: 10-12 part, antioxidant 264: 12-14 part, dibutyl phthalate: 5-7 part;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
2. the high tensile steel plate for medium-sized goods shelf according to claim 1, is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.56%, manganese: 0.04%, titanium: 0.94%, cobalt: 0.02%, sodium: 0.07%, scandium: 0.23%, vanadium: 2.16%, rubidium: 2.36%, copper: 2.03%, niobium: 0.57%, chromium: 2.7%, molybdenum: 0.02%, nickel: 1.11%, neodymium: 0.36%, praseodymium: 2.42%, cerium: 0.85%, samarium: 3.2%, lutetium: 4.2%, erbium: 1.3%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.4%, 1/3 thickness is 6.3% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 65 parts, bisphenol A epoxide resin: 46 parts, Isooctyl acrylate monomer: 20 parts, isoprene-isobutylene rubber: 12 parts, ceramics powder: 7 parts, tetrachloroethylene: 5 parts, toluene: 1 part, GPES type defoamer: 3 parts; Bisphenol F epoxy resin: 24 parts, pearlescence: 10 parts, silicon-dioxide: 8 parts, methacrylic acid: 10 parts, antioxidant 264: 12 parts, dibutyl phthalate: 5 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
3. the high tensile steel plate for medium-sized goods shelf according to claim 1, is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.58%, manganese: 0.06%, titanium: 0.96%, cobalt: 0.04%, sodium: 0.09%, scandium: 0.25%, vanadium: 2.18%, rubidium: 2.39%, copper: 2.05%, niobium: 0.59%, chromium: 2.9%, molybdenum: 0.04%, nickel: 1.13%, neodymium: 0.38%, praseodymium: 2.44%, cerium: 0.86%, samarium: 3.6%, lutetium: 4.5%, erbium: 1.5%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.6%, 1/3 thickness is 6.5% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 67 parts, bisphenol A epoxide resin: 48 parts, Isooctyl acrylate monomer: 23 parts, isoprene-isobutylene rubber: 14 parts, ceramics powder: 9 parts, tetrachloroethylene: 8 parts, toluene: 3 parts, GPES type defoamer: 5 parts; Bisphenol F epoxy resin: 26 parts, pearlescence: 12 parts, silicon-dioxide: 9 parts, methacrylic acid: 12 parts, antioxidant 264: 14 parts, dibutyl phthalate: 7 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
4. the high tensile steel plate for medium-sized goods shelf according to claim 1, is characterized in that: the composition of this steel plate and mass percent are: carbon: 0.57%, manganese: 0.05%, titanium: 0.95%, cobalt: 0.03%, sodium: 0.08%, scandium: 0.24%, vanadium: 2.17%, rubidium: 2.38%, copper: 2.04%, niobium: 0.58%, chromium: 2.8%, molybdenum: 0.03%, nickel: 1.12%, neodymium: 0.37%, praseodymium: 2.43%, cerium: 0.85%, samarium: 3.4%, lutetium: 4.3%, erbium: 1.4%, surplus is Fe and inevitable impurity;
In this steel plate, first-phase is perlite, and second-phase is cementite, be 7.5%, 1/3 thickness is 6.4% to center second-phase percent by volume in thickness place, surface to 1/4 second-phase percent by volume, and without banded structure;
The surface spraying of described steel plate has corrosion-resistant coating, and described corrosion-resistant coating is according to the mass fraction;
Epoxy modified silicone resin: 66 parts, bisphenol A epoxide resin: 47 parts, Isooctyl acrylate monomer: 22 parts, isoprene-isobutylene rubber: 13 parts, ceramics powder: 8 parts, tetrachloroethylene: 7 parts, toluene: 2 parts, GPES type defoamer: 4 parts; Bisphenol F epoxy resin: 25 parts, pearlescence: 11 parts, silicon-dioxide: 8 parts, methacrylic acid: 11 parts, antioxidant 264: 13 parts, dibutyl phthalate: 6 parts;
Wherein ceramics powder is rear ceramics powder of purifying, and the method for purification concrete operations of ceramics powder are as follows:
first that organic solvent 5A type molecular sieve dehydration 3 days is for subsequent use;
ceramics powder, organic solvent and catalyst trap agent to be joined in the there-necked flask of 450mm after stirring at room temperature 40min and leave standstill 1h, then the impurity that the Suction filtration device elimination of composition trying vacuum pump, Büchner funnel and Erlenmeyer flask with recirculated water is separated out;
the ceramics powder removing impurity is joined in there-necked flask, starts heating and be slowly warming up to 70 DEG C, organic solvent evaporated and collects, being warming up to 95 DEG C, suction filtration 30min, the ceramics powder after purifying can be obtained.
5. for a forging process for the high tensile steel plate of medium-sized goods shelf, it is characterized in that, concrete technology is as follows:
Step (1): in arc furnace smelting procedure, after first furnace temperature being risen to 780-785 DEG C, proportionally adds steel plate alloy material, then temperature is risen to 1250-1260 DEG C, insulation 1-2h;
Step (2): through the refining of LF stove, refining temperature is 1410-1420 DEG C, and composition is finely tuned, insulation 3-5h, and omnidistance nitrogen blowing stirs, and makes Chemical Composition reach component requirements, then cools the temperature to as 570-580 DEG C;
Step (3): carry out degassed with vacuum degassing furnace, degassing temperature is 1250-1310 DEG C, vacuum tightness 48-50 handkerchief, and pumpdown time is at 2-4h;
Step (4): carry out helium protection die casting at the temperature of 1385-1390 DEG C, after solidifying, temperature is remained on 750-760 DEG C, soaking time is 45-55h, and last air cooling is to room temperature;
Step (5): the steel plate forged is carried out first time thermal treatment: steel plate is put into process furnace and is heated to 680-690 DEG C, insulation 30-45min, then with air-cooled with the speed cool to room temperature of 5-8 DEG C/s, and then be heated to 870-880 DEG C, adopt oil cooling, be cooled to room temperature with the speed of 13-15 DEG C/s;
Step (6): the steel plate forged is carried out second time thermal treatment: steel plate is put into process furnace and is heated to 880-890 DEG C, insulation 30-45min, then use water-cooled with the speed cool to room temperature of 10-12 DEG C/s, and then be heated to 670-680 DEG C, adopt oil cooling, 320-330 DEG C is cooled to the speed of 13-15 DEG C/s, then to its surface spraying graphite grinding, thickness is 0.65-0.85mm, is then heated to 700-710 DEG C, insulation 1-2h, then air cooling is to room temperature;
Step (7): cleaning surface of steel plate, configuration corrosion-resistant coating, utilize spraying equipment to spray corrosion-resistant coating to surface of steel plate, thickness is 3-5mm, and then putting into envrionment temperature is 58-60 DEG C, and insulation 2-5h, then air cooling is to room temperature.
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