CN105256228A - A kind of pre-hardened plastic mold steel with high ductility and high density and preparation method thereof - Google Patents
A kind of pre-hardened plastic mold steel with high ductility and high density and preparation method thereof Download PDFInfo
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- CN105256228A CN105256228A CN201510681005.XA CN201510681005A CN105256228A CN 105256228 A CN105256228 A CN 105256228A CN 201510681005 A CN201510681005 A CN 201510681005A CN 105256228 A CN105256228 A CN 105256228A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910001214 P-type tool steel Inorganic materials 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000003607 modifier Substances 0.000 claims abstract description 17
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 11
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims description 18
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 9
- 238000005242 forging Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229910052691 Erbium Inorganic materials 0.000 claims description 3
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 150000003658 tungsten compounds Chemical class 0.000 description 1
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- Heat Treatment Of Steel (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a high-ductility high-density pre-hardened plastic die steel and a preparation method thereof, the die steel properly improves the proportion of elements such as Ni, Mn, Zn, Co and the like on the element proportion of the traditional pre-hardened plastic die steel, simultaneously controls the dosage of other alloy elements, further improves the mechanical property and the processing property of alloy materials on the basis of ensuring the mechanical property of the traditional plastic die steel, has high strength, good toughness, good ductility and fatigue resistance, and the added rare earth oxide-graphene oxide-coated nano tungsten carbide composite modifier refines the tissue structure of the die steel, has more compact tissue, improves the interface compatibility among crystals and has obvious toughening effect; the preparation method of the die steel is simple and efficient, the manufacturing period is short, the die steel is durable, the surface quality of the obtained plastic part is high, and the die steel has high production and application values.
Description
Technical field
The present invention relates to plastic die steel product technical field, particularly relate to pre-hardened plastic mold steel of a kind of high ductibility high-compactness and preparation method thereof.
Background technology
Along with automobile, tractor, motor, wireless, the developing rapidly of household electrical appliance and national defense industry, cold stamping, extruding, die forging and die casting etc. are widely used without cutting technology, increasing to the requirement of mould, more and more higher requirement be it is also proposed to the thermal treatment quality etc. of the rolling shapes of mfg. moulding die, the metallurgical production of steel and steel.
The kind of current die steel mainly contains cold-work die steel, hot-work die steel, plastic die steel etc., ratio wherein shared by plastic die steel is maximum, the use properties of die steel is directly connected to the quality of the plastic prod processed, due to the characteristic of plastic prod, in erosion resistance, dimensional stability, surface abrasion resistance, polishability etc., all have higher requirement to plastic die steel, existing plastic die steel mainly exist hardness low, wear no resistance, work-ing life is low, many etc. the bandits of surface imperfection are to be solved problem.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides pre-hardened plastic mold steel of a kind of high ductibility high-compactness and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of pre-hardened plastic mold steel of high ductibility high-compactness, in this die steel, the weight percentage of each component is: C:0.4-0.5%, Si:0.8-1.4%, Ni:8.0-10.0%, Zn:2.0-3.0%, Mn:5.0-6.0%, Co:0.5-0.8%, Nd:0.2-0.4%, Er:0.01-0.02%, P≤0.02%, S≤0.01%, compound modifier: 0.01-0.02%, all the other are Fe and inevitable impurity.
The pre-hardened plastic mold steel of described a kind of high ductibility high-compactness, described compound modifier is made up of the raw material of following weight part: oxide nano rare earth 2-3, nano titanium carbide 8-10, graphene oxide 1-1.5, dehydrated alcohol are appropriate, PEG-4000.1-0.2; Its preparation method is: be first dissolved in dehydrated alcohol by PEG-400, drop into oxide nano rare earth, graphene oxide subsequently, ultrasonic agitation process 40-50min, nano titanium carbide is added after it disperses completely, continue ultrasonic agitation mixing 1-2h, in 350-400 DEG C of baking oven, carry out drying treatment after stirring terminates, the abundant grinding distribution of powder after complete drying, obtain the compound modifier of rare earth oxide-graphene oxide compound coating nano titanium carbide.
The preparation method of the pre-hardened plastic mold steel of described a kind of high ductibility high-compactness, described preparation method is:
(1) drop in smelting furnace by each raw material except compound modifier according to element proportioning, after fusing, gained molten steel pours into steel ingot after refining and Fruit storage completely, and adds compound modifier with stream in casting process;
(2) steel ingot of gained is heated to 1100-1180 DEG C with the temperature rise rate of 100-120 DEG C/h in process furnace, after insulation 3-4h, steel ingot is forged, open forging temperature be 1050-1120 DEG C, stop forging temperature be 750-800 DEG C, gained module come out of the stove after naturally cooling for subsequent use;
(3) step (2) gained module is put into tempering stove, be heated to 450-500 DEG C with the speed of 60-80 DEG C/h, come out of the stove, through naturally cooling to room temperature and get final product after insulation 4-5h.
Advantage of the present invention is: the present invention suitably improves Ni in the element proportioning of traditional pre-hardened plastic mold steel, Mn, Zn, the proportioning of the elements such as Co, control the consumption of other alloying elements simultaneously, the basis ensureing conventional plastic die steel mechanical property further increases mechanical property and the processing characteristics of alloy material, its intensity is high, toughness is good, ductility is good, antifatigue, the rare earth oxide added-graphene oxide clad nano carbonization tungsten compound modifier refinement weave construction of die steel, organize more fine and close, improve the interface compatibility between crystal, activeness and quietness Be very effective, this die steel preparation method is simply efficient, and the manufacturing cycle is short, durable in use, and gained plastic part surface quality is high, has production application and is worth.
Embodiment
In the die steel of this embodiment, the weight percentage of each component is: C:0.4%, Si:0.8%, Ni:8.0%, Zn:2.0%, Mn:5.0%, Co:0.5%, Nd:0.2%, Er:0.01%, P≤0.02%, S≤0.01%, compound modifier: 0.01%, all the other are Fe and inevitable impurity.
Wherein compound modifier is made up of the raw material of following weight part: oxide nano rare earth 2, nano titanium carbide 8, graphene oxide 1, dehydrated alcohol are appropriate, PEG-4000.1; Its preparation method is: be first dissolved in dehydrated alcohol by PEG-400, drop into oxide nano rare earth, graphene oxide subsequently, ultrasonic agitation process 40min, nano titanium carbide is added after it disperses completely, continue ultrasonic agitation mixing 1h, in 350 DEG C of baking ovens, carry out drying treatment after stirring terminates, the abundant grinding distribution of powder after complete drying, obtains the compound modifier of rare earth oxide graphene oxide compound coating nano titanium carbide.
The preparation method of this embodiment die steel is:
(1) drop in smelting furnace by each raw material except compound modifier according to element proportioning, after fusing, gained molten steel pours into steel ingot after refining and Fruit storage completely, and adds compound modifier with stream in casting process;
(2) steel ingot of gained is heated to 1100 DEG C with the temperature rise rate of 100 DEG C/h in process furnace, insulation 3h after steel ingot is forged, open forging temperature be 1050 DEG C, stop forging temperature be 750 DEG C, gained module come out of the stove after naturally cooling for subsequent use;
(3) step (2) gained module is put into tempering stove, be heated to 450 DEG C with the speed of 60 DEG C/h, come out of the stove, through naturally cooling to room temperature and get final product after insulation 4h.
The mechanics properties testing result of the plastic die steel that the present embodiment prepares is as follows:
| Test item | Measured value |
| Hardness (HRC) | 64.2 |
| Tensile strength (MPa) | 1605 |
| Impelling strength (J/cm 2) | 152.3 |
| Fracture toughness property (MPa.m 1/2) | 140.4 |
The plastic die steel that this embodiment prepares is compared than traditional P20 forging plastic die steel and is on average extended 2.2 times work-ing life, its surface compact flawless, surface of polished roughness Ra < 0.10 μm.
Claims (3)
1. the pre-hardened plastic mold steel of a high ductibility high-compactness, it is characterized in that, in this die steel, the weight percentage of each component is: C:0.4-0.5%, Si:0.8-1.4%, Ni:8.0-10.0%, Zn:2.0-3.0%, Mn:5.0-6.0%, Co:0.5-0.8%, Nd:0.2-0.4%, Er:0.01-0.02%, P≤0.02%, S≤0.01%, compound modifier: 0.01-0.02%, all the other are Fe and inevitable impurity.
2. the pre-hardened plastic mold steel of a kind of high ductibility high-compactness as claimed in claim 1, is characterized in that: described compound modifier is made up of the raw material of following weight part: oxide nano rare earth 2-3, nano titanium carbide 8-10, graphene oxide 1-1.5, dehydrated alcohol are appropriate, PEG-4000.1-0.2; Its preparation method is: be first dissolved in dehydrated alcohol by PEG-400, drop into oxide nano rare earth, graphene oxide subsequently, ultrasonic agitation process 40-50min, nano titanium carbide is added after it disperses completely, continue ultrasonic agitation mixing 1-2h, in 350-400 DEG C of baking oven, carry out drying treatment after stirring terminates, the abundant grinding distribution of powder after complete drying, obtain the compound modifier of rare earth oxide-graphene oxide compound coating nano titanium carbide.
3. the preparation method of the pre-hardened plastic mold steel of a kind of high ductibility high-compactness as claimed in claim 1, it is characterized in that, described preparation method is:
(1) drop in smelting furnace by each raw material except compound modifier according to element proportioning, after fusing, gained molten steel pours into steel ingot after refining and Fruit storage completely, and adds compound modifier with stream in casting process;
(2) steel ingot of gained is heated to 1100-1180 DEG C with the temperature rise rate of 100-120 DEG C/h in process furnace, after insulation 3-4h, steel ingot is forged, open forging temperature be 1050-1120 DEG C, stop forging temperature be 750-800 DEG C, gained module come out of the stove after naturally cooling for subsequent use;
(3) step (2) gained module is put into tempering stove, be heated to 450-500 DEG C with the speed of 60-80 DEG C/h, come out of the stove, through naturally cooling to room temperature and get final product after insulation 4-5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681005.XA CN105256228A (en) | 2015-10-15 | 2015-10-15 | A kind of pre-hardened plastic mold steel with high ductility and high density and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510681005.XA CN105256228A (en) | 2015-10-15 | 2015-10-15 | A kind of pre-hardened plastic mold steel with high ductility and high density and preparation method thereof |
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| CN105256228A true CN105256228A (en) | 2016-01-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676382A (en) * | 2016-12-14 | 2017-05-17 | 徐世云 | Composite gray cast iron alternate with manganese-molybdenum-copper-ferrosilicon alloy loaded with nano titanium-ferric oxides and preparation method of composite gray cast iron alternate |
| CN108048736A (en) * | 2017-11-28 | 2018-05-18 | 万鑫精工（湖南）有限公司 | A kind of sun gear of planetary reduction gear and preparation method thereof |
| CN109695001A (en) * | 2017-10-20 | 2019-04-30 | 鞍钢股份有限公司 | Novel rare earth hot work die steel and preparation method thereof |
| CN110106440A (en) * | 2019-05-05 | 2019-08-09 | 张波 | A kind of high temperature heat transfer material and its preparation method and application |
| CN112226666A (en) * | 2020-10-28 | 2021-01-15 | 蚌埠飞宇轴承有限公司 | Preparation method of high-strength bearing |
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| CN104307530A (en) * | 2014-10-22 | 2015-01-28 | 河北工业大学 | Graphene oxide rare earth compound catalytic material and preparation method thereof |
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Patent Citations (6)
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| EP1837118A1 (en) * | 2006-03-22 | 2007-09-26 | Lincoln Global, Inc. | Hardfacing electrode |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676382A (en) * | 2016-12-14 | 2017-05-17 | 徐世云 | Composite gray cast iron alternate with manganese-molybdenum-copper-ferrosilicon alloy loaded with nano titanium-ferric oxides and preparation method of composite gray cast iron alternate |
| CN109695001A (en) * | 2017-10-20 | 2019-04-30 | 鞍钢股份有限公司 | Novel rare earth hot work die steel and preparation method thereof |
| CN109695001B (en) * | 2017-10-20 | 2020-09-29 | 鞍钢股份有限公司 | A new type of rare earth hot work die steel and preparation method thereof |
| CN108048736A (en) * | 2017-11-28 | 2018-05-18 | 万鑫精工（湖南）有限公司 | A kind of sun gear of planetary reduction gear and preparation method thereof |
| CN110106440A (en) * | 2019-05-05 | 2019-08-09 | 张波 | A kind of high temperature heat transfer material and its preparation method and application |
| CN112226666A (en) * | 2020-10-28 | 2021-01-15 | 蚌埠飞宇轴承有限公司 | Preparation method of high-strength bearing |
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