CN101736191A - Insert material for heat-resisting ductile iron stamping die - Google Patents
Insert material for heat-resisting ductile iron stamping die Download PDFInfo
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- CN101736191A CN101736191A CN201010030848A CN201010030848A CN101736191A CN 101736191 A CN101736191 A CN 101736191A CN 201010030848 A CN201010030848 A CN 201010030848A CN 201010030848 A CN201010030848 A CN 201010030848A CN 101736191 A CN101736191 A CN 101736191A
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Abstract
The invention discloses an insert material for a heat-resisting ductile iron stamping die, aiming at overcoming the problem that the conventional die steel has high cost and providing a die material of a thicker steel plate which is stamped and formed under high temperature. The die material comprises the following components in percentage by weight: 2.4 to 2.9 percent of C, 4 .0 to 6.0 percent of Si, 0.3 to 1.2 percent of Mn, 0.3 to 1.2 percent of Cr and the balance of Fe. A preparation method of the die material comprises the following steps of: smelting by adopting an alkaline medium-frequency induction furnace, firstly clearing pig iron and steel scraps in the furnace, then adding alloys, adjusting the content of the alloys, taking away the furnace slag on the surface of iron liquid after iron alloy is cleared, and finally discharging from the furnace and pouring. The material has the properties of more than 505MPa of tensile strength and below 0.20g/m<2>h of oxidation speed after the heat preservation for 150 hours at 800 DEG C, belongs to a heat-resisting material, and has below 1.2mm of fatigue crack length after circulating 2000 times at 25 to 800 DEG C, thereby being superior to the performance of heat-resisting gray pig iron.
Description
Technical field
The present invention relates to a kind of heat-resisting spheroidal graphite cast iron moulding stock, more particularly, the present invention relates to a kind of insert material for heat-resisting ductile iron stamping die.
Background technology
The material of making heat-resisting mould mainly is high temperature steel, stainless steel, heat resisting iron etc.Because cast iron has good castability and workability energy, low price, easily manufactured, thereby is widely used in making glass mold and ingot mold.The heat-resisting moulding stock of cast iron commonly used both at home and abroad is mainly graphitic cast iron, low-alloy cast iron and spheroidal graphite cast iron etc.
Mould is when the thicker hot steel plate of punching press, and mould contacts with the high temperature steel plate continually, bears effects such as oxidation, growth, thermal fatigue, wearing and tearing.This just requires that such mould has that anti-oxidant, antibiosis is long, thermal fatigue resistance and performance such as wear-resisting, also certain normal temperature and mechanical behavior under high temperature will be arranged for the mould that bears big working load simultaneously.As seen, the moulding stock that can satisfy above-mentioned requirements fully seldom.Therefore, according to different working conditionss, select for use or to develop the moulding stock of unlike material necessary.
Graphite in the spheroidal graphite cast iron is uniformly distributed in the matrix with spherical particle, thereby less with the tendency that produces stress concentration to the weakening effect of matrix, thereby the interaction energy of matrix is fully played.Again because spheroidal graphite cast iron contains the silicon and the manganese of high level, so the tensile strength of spheroidal graphite cast iron not only is higher than other cast iron, even is higher than carbon steel, especially outstanding is, and its yield strength ratio steel is much higher.Therefore, domesticly replace die steel to be applied to obtain considerable economic in the Drawing Die it.Make heat-resistant part with spheroidal graphite cast iron, its antioxidant property is better than grey cast iron, because the graphite of sheet overlap joint can form the oxidation passage in the grey cast iron, and the oxidative phenomena of aggravation grey cast iron.Therefore, the domestic and international in recent years research to heat-resisting spheroidal graphite cast iron begins again to heat up.Silicon class, middle aluminium class, sial class, medium-Si, Mo class, middle silicochromium molybdenum multicomponent alloy class etc. mainly were used in the grate bar of the exhaust system component of motor car engine, heat-resisting mould and sinter machine etc. during existing heat-resisting spheroidal graphite cast iron mainly contained.For example, the Chinese patent publication number is CN1103435A, open day is June 7 nineteen ninety-five, the applying date is on December 1st, 1993, invention and created name is " a middle silicon low-alloy refractory ductile iron grate ", the applicant is an Anshan Iron and Steel Company etc., discloses the component of middle silicon low-alloy refractory ductile iron grate in this application case with the content of (wt.%) by weight percentage to be: C:2.5 0～2.90; Si:6.5 0～7.80; Mn:0.20～0.35; P:0.03～0.05; S:0.03～0.05; Mg:O0.012～0.040; Xt:0.035～0.055; Cr:0.30～0.50; Mo:0.30～0.50; Al:0.12～0.50; Ba:0.005～0.07; Surplus is Fe.Its si content is higher, and by other the interpolation of multicomponent microalloying element, makes grate bar resistance to oxidation, wear-resisting, heat shock resistance, can replace high alloy grate bar to be used for sintering pallet.Weak point is that alloy species is many, and complicated operation contains expensive Mo element.The Chinese patent publication number is CN1826421A, open day is on August 3rd 0,2006, the applying date is on July 20th, 2004, invention and created name is " austenite heat-resistant spheroidal graphite cast iron ", the applicant is a Hitachi Metal Co., Ltd., discloses the component of austenite heat-resistant spheroidal graphite cast iron in this application case with the content of (wt.%) by weight percentage to be: C:1～3.5%; Si:1～6.5%; Below the Cr:3%; Ni:10～40%; Mo:1～4.5%; Sn and/or Sb count 0.001～0.5% with 2Sn+Sb; The nodulizing agent element is below 0.1%.This series spheroidal graphite cast iron is applicable to the exhaust system component that motor car engine is used etc.Weak point is that expensive Ni, Mo constituent content are higher, has increased cost.The Chinese patent publication number is CN 1051593A, open day is on May 22nd, 1991, the applying date is on November 7th, 1989, invention and created name is " a low chromium medium-Si, Mo ferrite ductile cast iron ", the applicant is a Shenyang Aircraft Manufacture Co, disclosing the component of low chromium medium-Si, Mo ferrite ductile cast iron in this application case with the content of (wt.%) by weight percentage is: C:2.0～3.0%, Si:4.5～6.0%, Mo:0.8～1.6%, Mn:0.06～0.17%, Cr:0.2～0.4%, surplus is a small amount of alloying element and Fe, is applicable to the high-temperature resistance die material in development and the small serial production.Weak point is to contain expensive Mo element.
In order to reduce the automobile production cost, make domestic automobile have stronger competitive power in domestic and international market, carry out heat-resisting spheroidal graphite cast iron at trolley part, as rear axle housing, the Application and Development on the high temperature punch-forming mold is very necessary.Because shaped steel plate is thicker, temperature is higher, working conditions is abominable, both required moulding stock heat-resisting, require it that enough hot strengths are arranged again, therefore, directly adopt existing heat-resisting spheroidal graphite cast iron can not satisfy the requirement of production, must further optimize the composition of heat-resisting spheroidal graphite cast iron, develop the heat-resisting spheroidal graphite cast iron moulding stock that microstructure and property satisfies production requirement.
Summary of the invention
Technical problem to be solved by this invention is to have overcome the high problem of existing mold steel cost, provides a kind of and has been suitable for than the at high temperature stamping forming heat-resisting spheroidal graphite cast iron press tool insert material of Plate Steel.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described insert material for heat-resisting ductile iron stamping die is to be by component and content by weight percentage: C:2.4～2.9%, Si:4.0～6.0%, Mn:0.3～1.2%, Cr:0.3～1.2% and surplus are formed by Fe.
Component C described in technical scheme content by weight percentage is 2.5-2.8%; Described component S i content by weight percentage is 4.5-5.5%; Described component Mn content by weight percentage is 0.6-1.0%; Described component Cr content by weight percentage is 0.6-1.0%.
Compared with prior art the invention has the beneficial effects as follows:
Insert material for heat-resisting ductile iron stamping die of the present invention is that composition is reasonable in design, and over-all properties is good.Test-results compared with prior art specific performance is as follows:
1. the as cast condition tensile strength of insert material for heat-resisting ductile iron stamping die of the present invention reaches more than the 505MPa;
2. insert material for heat-resisting ductile iron stamping die of the present invention was 800 ℃ of insulations 150 hours, and oxidation rate is lower than 0.20g/m
2H belongs to heat-stable material;
3. insert material for heat-resisting ductile iron stamping die of the present invention is 25 ℃～800 ℃ circulations 2000 times, and fatigue crack length is lower than 1.2mm, is better than heat-resisting graphitic cast iron.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1 by component and content by weight percentage is: C:2.6%, and Si:5.5%, Mn:0.8%, Cr:0.6% and surplus are the metallographic structure picture that Fe forms insert material for heat-resisting ductile iron stamping die of the present invention;
Fig. 2 by component and content by weight percentage is: C:2.6%, and Si:5.5%, Mn:1.0%, Cr:0.8% and surplus are the metallographic structure picture that Fe forms insert material for heat-resisting ductile iron stamping die of the present invention;
Fig. 3 by component and content by weight percentage is: C:2.6%, and Si:5%, Mn:0.6%, Cr:0.8% and surplus are the metallographic structure picture that Fe forms insert material for heat-resisting ductile iron stamping die of the present invention;
Fig. 4 by component and content by weight percentage is: C:2.6%, and Si:5%, Mn:1.0%, Cr:0.6% and surplus are the metallographic structure picture that Fe forms insert material for heat-resisting ductile iron stamping die of the present invention;
Fig. 5 by component and content by weight percentage is: C:2.5%, and Si:4.5%, Mn:0.8%, Cr:0.8% and surplus are the metallographic structure picture that Fe forms insert material for heat-resisting ductile iron stamping die of the present invention;
Fig. 6 by component and content by weight percentage is: C:2.8%, and Si:4.5%, Mn:1.0%, Cr:1.0% and surplus are the metallographic structure picture that Fe forms insert material for heat-resisting ductile iron stamping die of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
The object of the present invention is to provide a kind of can replace die steel and can overcome that deficiency, the cost of existing heat resisting iron and common spheroidal graphite cast iron is low, long service life, tissue is stable, mechanical property is high, oxidation-resistance is strong, thermal fatigue resistance and the strong heat-resisting spheroidal graphite cast iron press tool insert material of wear resistance.
For achieving the above object, heat-resisting spheroidal graphite cast iron press tool insert material of the present invention is to be by the component and the content of (wt.%) by weight percentage: C:2.4～2.9%, Si:4.0～6.0%, Mn:0.3～1.2%, Cr:0.3～1.2% and surplus are formed by Fe.
Silicon, manganese, chromium are that the present invention is the main alloy element that improves heat-resisting spheroidal graphite cast iron press tool insert material oxidation-resistance and thermal fatigue resistance.Although molybdenum (Mo) has very favorable effect to improving spheroidal graphite cast iron thermotolerance and mechanical behavior under high temperature, because the price of molybdenum-iron is more expensive in the market, for reducing material cost, heat-resisting spheroidal graphite cast iron die insert material of the present invention does not add molybdenum.Therefore, the present invention considers following several respects problem when chemical composition designs:
1. carbon is the very strong element of graphitizability, can eliminate carbide effectively, helps the spheroidal graphite cast iron nodularization.The determining of carbon amount will be considered three aspect factor, the one, and for the parts of taking up wear, inserting of spheroidal graphite cast iron mould as described in the present invention, the solid lubricant when enough globular graphite can be used as parts work reduces component wear, improves component life; The 2nd, from improving castability, reduce casting flaw, obtaining to perfect aspect such as foundry goods and consider that the carbon amount is wanted suitably; The 3rd, the add-on of consideration silicon is taken all factors into consideration carbon equivalent to the material structure Effect on Performance.Therefore, take into account above-mentioned three aspects, we are controlled at 2.4-2.9% by weight percentage with carbon (C) constituent content.
2. silicon is the strong graphited element that promotes, also is the principal element that influences ferrite content in the spheroidal graphite cast iron.Increase the silicon amount, can reduce and eliminate the carbide in the as-cast structure, but the silicon amount is too high, then reduce the quantity of organizing Medium pearlite.Silicon also can improve the antioxidant property and the anti-performance of growing up of spheroidal graphite cast iron, adds element silicon in the spheroidal graphite cast iron, can form fine and close SiO
2Surface film oxide, thus the surface oxidation-resistant ability of spheroidal graphite cast iron improved, stablize the geometrical dimension of spheroidal graphite cast iron.Therefore, we are controlled at 4.0～6.0% by weight percentage with silicon (Si) constituent content.
3. manganese is weak carbide forming element, in the eutectoid transformation process, can promote perlitic transformation, and stable and refine pearlite increases spheroidal graphite cast iron intensity, hardness.But manganese (Mn) constituent content is too high, and toughness of material descends, and machining property worsens.Therefore, be perlite in order to guarantee matrix, manganese (Mn) constituent content is controlled at 0.3～1.2% by weight percentage.
4. the chromium element can form surface film oxide, improve spheroidal graphite cast iron resistance of oxidation and tensile strength at high temperature in spheroidal graphite cast iron.The chromium element can promote the formation of carbide, adds the chromium element in the spheroidal graphite cast iron and can promote pearlitic generation, stable and refinement, improves the hardness of spheroidal graphite cast iron, thereby improves the anti-chamfered edge of mould, anti scuffing, wear-resistant ability.But chromium is the element that promotes spoken parts in traditional operas, and the chromatize amount is too much, more free cementite can occur in the as-cast structure, and it costs an arm and a leg.So, chromium (Cr) constituent content is controlled at 0.3～1.2% by weight percentage.
Insert material for heat-resisting ductile iron stamping die of the present invention is to adopt alkaline medium-frequency induction furnace melting.Earlier the pig iron and steel scrap are changed in stove clearly, are added alloy then, adjust alloying constituent, treat that iron alloyization clearly after, pull down the surperficial slag of iron liquid, the cast of coming out of the stove at last.Its spheroidizing is identical with general spheroidal graphite cast iron, promptly adopts the method that pours.The molten iron tapping temperature is about 1450 ℃～1500 ℃, and spheroidization treatment temperature is about about 1350 ℃～1450 ℃.Use rare earth magnesium nodularizer, its consumption (wt.%) by weight percentage is 0.4～1.6% of a molten iron total amount.The heat-resisting ductile iron stamping die of the present invention employing wet sand casting of inserting.
Insert material for heat-resisting ductile iron stamping die of the present invention, composition is reasonable in design, and over-all properties is good.Specific performance is as follows:
1. as cast condition tensile strength reaches more than the 505MPa;
2. 800 ℃ of insulations 150 hours, oxidation rate was lower than 0.20g/m
2H belongs to heat-stable material;
3. 25 ℃～800 ℃ circulations 2000 times, fatigue crack length is lower than 1.2mm, is better than heat-resisting graphitic cast iron.
Consult Fig. 1, the component of insert material for heat-resisting ductile iron stamping die of the present invention with the content of (wt.%) by weight percentage is: C:2.6%, and Si:5.5%, Mn:0.8%, Cr:0.6%, surplus is Fe.Adopt alkaline medium-frequency induction furnace melting.Earlier the pig iron and steel scrap are changed in stove clearly, are added alloy then, adjust alloying constituent, treat that iron alloyization clearly after, pull down the surperficial slag of iron liquid, the cast of coming out of the stove at last.Its spheroidizing is identical with general spheroidal graphite cast iron, promptly adopts the method that pours.The molten iron tapping temperature is about 1450 ℃～1500 ℃, and spheroidization treatment temperature is about about 1350 ℃～1450 ℃.Use rare earth magnesium nodularizer, its consumption be the molten iron total amount (wt.%) 0.4～1.6%.Adopt wet sand casting.
Gained insert material for heat-resisting ductile iron stamping die graphite pebbles form and distributing as shown in FIG., its as cast condition tensile strength is 546MPa; 800 ℃ of insulations 150 hours, oxidation rate was 0.085g/m
2H; 25 ℃～800 ℃ circulations 2000 times, fatigue crack length is 1.10mm.As seen, insert material for heat-resisting ductile iron stamping die of the present invention has good oxidization resistance and thermal fatigue resistance.
Embodiment 2
Consult Fig. 2, the component of insert material for heat-resisting ductile iron stamping die of the present invention with the content of (wt.%) by weight percentage is: C:2.6%, and Si:5.5%, Mn:1.0%, Cr:0.8%, surplus is Fe.Adopt alkaline medium-frequency induction furnace melting.Earlier the pig iron and steel scrap are changed in stove clearly, are added alloy then, adjust alloying constituent, treat that iron alloyization clearly after, pull down the surperficial slag of iron liquid, the cast of coming out of the stove at last.Its spheroidizing is identical with general spheroidal graphite cast iron, promptly adopts the method that pours.The molten iron tapping temperature is about 1450 ℃～1500 ℃, and spheroidization treatment temperature is about about 1350 ℃～1450 ℃.Use rare earth magnesium nodularizer, its consumption be the molten iron total amount (wt.%) 0.4～1.6%.Adopt wet sand casting.
Gained insert material for heat-resisting ductile iron stamping die graphite pebbles form and distributing as shown in FIG., its as cast condition tensile strength is 578MPa; 800 ℃ of insulations 150 hours, oxidation rate was 0.113g/m
2H; 25 ℃～800 ℃ circulations 2000 times, fatigue crack length is 0.85mm.As seen, insert material for heat-resisting ductile iron stamping die of the present invention has good oxidization resistance and thermal fatigue resistance.
Embodiment 3
Consult Fig. 3, the component of insert material for heat-resisting ductile iron stamping die of the present invention with the content of (wt.%) by weight percentage is: C:2.6%, and Si:5.0%, Mn:0.6%, Cr:0.8%, surplus is Fe.Adopt alkaline medium-frequency induction furnace melting.Earlier the pig iron and steel scrap are changed in stove clearly, are added alloy then, adjust alloying constituent, treat that iron alloyization clearly after, pull down the surperficial slag of iron liquid, the cast of coming out of the stove at last.Its spheroidizing is identical with general spheroidal graphite cast iron, promptly adopts the method that pours.The molten iron tapping temperature is about 1450 ℃～1500 ℃, and spheroidization treatment temperature is about about 1350 ℃～1450 ℃.Use rare earth magnesium nodularizer, its consumption be the molten iron total amount (wt.%) 0.4～1.6%.Adopt wet sand casting.
Gained insert material for heat-resisting ductile iron stamping die graphite pebbles form and distributing as shown in FIG., its as cast condition tensile strength is 530MPa; 800 ℃ of insulations 150 hours, oxidation rate was 0.144g/m
2H; 25 ℃～800 ℃ circulations 2000 times, fatigue crack length is 0.95mm.As seen, insert material for heat-resisting ductile iron stamping die of the present invention has good oxidization resistance and thermal fatigue resistance.
Embodiment 4
Consult Fig. 4, the component of insert material for heat-resisting ductile iron stamping die of the present invention with the content of (wt.%) by weight percentage is: C:2.6%, and Si:5.0%, Mn:1.0%, Cr:0.6%, surplus is Fe.Adopt alkaline medium-frequency induction furnace melting.Earlier the pig iron and steel scrap are changed in stove clearly, are added alloy then, adjust alloying constituent, treat that iron alloyization clearly after, pull down the surperficial slag of iron liquid, the cast of coming out of the stove at last.Its spheroidizing is identical with general spheroidal graphite cast iron, promptly adopts the method that pours.The molten iron tapping temperature is about 1450 ℃～1500 ℃, and spheroidization treatment temperature is about about 1350 ℃～1450 ℃.Use rare earth magnesium nodularizer, its consumption be the molten iron total amount (wt.%) 0.4～1.6%.Adopt wet sand casting.
Gained insert material for heat-resisting ductile iron stamping die graphite pebbles form and distributing as shown in FIG., its as cast condition tensile strength is 526MPa; 800 ℃ of insulations 150 hours, oxidation rate was 0.125g/m
2H; 25 ℃～800 ℃ circulations 2000 times, fatigue crack length is 1.20mm.As seen, insert material for heat-resisting ductile iron stamping die of the present invention has good oxidization resistance and thermal fatigue resistance.
Embodiment 5
Consult Fig. 5, the component of insert material for heat-resisting ductile iron stamping die of the present invention with the content of (wt.%) by weight percentage is: C:2.5%, and Si:4.5%, Mn:0.8%, Cr:0.8%, surplus is Fe.Adopt alkaline medium-frequency induction furnace melting.Earlier the pig iron and steel scrap are changed in stove clearly, are added alloy then, adjust alloying constituent, treat that iron alloyization clearly after, pull down the surperficial slag of iron liquid, the cast of coming out of the stove at last.Its spheroidizing is identical with general spheroidal graphite cast iron, promptly adopts the method that pours.The molten iron tapping temperature is about 1450 ℃～1500 ℃, and spheroidization treatment temperature is about about 1350 ℃～1450 ℃.Use rare earth magnesium nodularizer, its consumption be the molten iron total amount (wt.%) 0.4～1.6%.Adopt wet sand casting.
Gained insert material for heat-resisting ductile iron stamping die graphite pebbles form and distributing as shown in FIG., its as cast condition tensile strength is 512MPa; 800 ℃ of insulations 150 hours, oxidation rate was 0.195g/m
2H; 25 ℃～800 ℃ circulations 2000 times, fatigue crack length is 1.20mm.As seen, insert material for heat-resisting ductile iron stamping die of the present invention has good oxidization resistance and thermal fatigue resistance.
Embodiment 6
Consult Fig. 6, the component of insert material for heat-resisting ductile iron stamping die of the present invention with the content of (wt.%) by weight percentage is: C:2.8%, and Si:4.5%, Mn:1.0%, Cr:1.0%, surplus is Fe.Adopt alkaline medium-frequency induction furnace melting.Earlier the pig iron and steel scrap are changed in stove clearly, are added alloy then, adjust alloying constituent, treat that iron alloyization clearly after, pull down the surperficial slag of iron liquid, the cast of coming out of the stove at last.Its spheroidizing is identical with general spheroidal graphite cast iron, promptly adopts the method that pours.The molten iron tapping temperature is about 1450 ℃～1500 ℃, and spheroidization treatment temperature is about about 1350 ℃～1450 ℃.Use rare earth magnesium nodularizer, its consumption be the molten iron total amount (wt.%) 0.4～1.6%.Adopt wet sand casting.
Gained insert material for heat-resisting ductile iron stamping die graphite pebbles form and distributing as shown in FIG., its as cast condition tensile strength is 505MPa; 800 ℃ of insulations 150 hours, oxidation rate was 0.178g/m
2H; 25 ℃～800 ℃ circulations 2000 times, fatigue crack length is 0.98mm.As seen, insert material for heat-resisting ductile iron stamping die of the present invention has good oxidization resistance and thermal fatigue resistance.
Claims (5)
1. insert material for heat-resisting ductile iron stamping die, it is characterized in that described insert material for heat-resisting ductile iron stamping die by component and content by weight percentage is: C:2.4～2.9%, Si:4.0～6.0%, Mn:0.3～1.2%, Cr:0.3～1.2% and surplus are that Fe forms.
2. according to the described insert material for heat-resisting ductile iron stamping die of claim 1, it is characterized in that described component C content by weight percentage is 2.5-2.8%.
3. according to the described insert material for heat-resisting ductile iron stamping die of claim 1, it is characterized in that described component S i content by weight percentage is 4.5-5.5%.
4. according to the described insert material for heat-resisting ductile iron stamping die of claim 1, it is characterized in that described component Mn content by weight percentage is 0.6-1.0%.
5. according to the described insert material for heat-resisting ductile iron stamping die of claim 1, it is characterized in that described component Cr content by weight percentage is 0.6-1.0%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886207A (en) * | 2010-07-21 | 2010-11-17 | 周传禄 | GRTCr heat resisting iron casting for hot-blast furnace and production method thereof |
| CN104259419A (en) * | 2014-09-25 | 2015-01-07 | 昆山伯建精密模具有限公司 | Preparation method of stamping sliding sleeve die |
| CN106521299A (en) * | 2016-12-16 | 2017-03-22 | 广西大学 | Heat treatment method for heat-resistant cast-iron boiler grate bar |
| CN107287496A (en) * | 2017-07-20 | 2017-10-24 | 马鞍山市万鑫铸造有限公司 | High tough spheroidal graphite cast-iron and its manufacturing process based on austenitic matrix |
| JP2018154863A (en) * | 2017-03-16 | 2018-10-04 | 株式会社アイメタルテクノロジー | Spheroidal graphite cast iron and exhaust component |
| CN109321814A (en) * | 2018-10-10 | 2019-02-12 | 西安理工大学 | A kind of glass mold cylinder iron profile and preparation method thereof |
-
2010
- 2010-01-21 CN CN201010030848A patent/CN101736191A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886207A (en) * | 2010-07-21 | 2010-11-17 | 周传禄 | GRTCr heat resisting iron casting for hot-blast furnace and production method thereof |
| CN104259419A (en) * | 2014-09-25 | 2015-01-07 | 昆山伯建精密模具有限公司 | Preparation method of stamping sliding sleeve die |
| CN106521299A (en) * | 2016-12-16 | 2017-03-22 | 广西大学 | Heat treatment method for heat-resistant cast-iron boiler grate bar |
| JP2018154863A (en) * | 2017-03-16 | 2018-10-04 | 株式会社アイメタルテクノロジー | Spheroidal graphite cast iron and exhaust component |
| CN107287496A (en) * | 2017-07-20 | 2017-10-24 | 马鞍山市万鑫铸造有限公司 | High tough spheroidal graphite cast-iron and its manufacturing process based on austenitic matrix |
| CN109321814A (en) * | 2018-10-10 | 2019-02-12 | 西安理工大学 | A kind of glass mold cylinder iron profile and preparation method thereof |
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Application publication date: 20100616 |