CN109735777B - Anti-oxidation hot-work die steel and preparation method thereof - Google Patents
Anti-oxidation hot-work die steel and preparation method thereof Download PDFInfo
- Publication number
- CN109735777B CN109735777B CN201910170339.9A CN201910170339A CN109735777B CN 109735777 B CN109735777 B CN 109735777B CN 201910170339 A CN201910170339 A CN 201910170339A CN 109735777 B CN109735777 B CN 109735777B
- Authority
- CN
- China
- Prior art keywords
- steel
- temperature
- less
- quenching
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 230000003064 anti-oxidating Effects 0.000 title description 2
- 230000003647 oxidation Effects 0.000 claims abstract description 19
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims description 23
- 230000000171 quenching Effects 0.000 claims description 23
- 238000005496 tempering Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000003723 Smelting Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000005242 forging Methods 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000003078 antioxidant Effects 0.000 abstract description 3
- 239000003963 antioxidant agent Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 12
- 239000011651 chromium Substances 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000010955 niobium Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 229910000529 magnetic ferrite Inorganic materials 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052803 cobalt Inorganic materials 0.000 description 2
- 230000001627 detrimental Effects 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000001192 hot extrusion Methods 0.000 description 2
- 238000011089 mechanical engineering Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910019802 NbC Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- DIMMBYOINZRKMD-UHFFFAOYSA-N vanadium(5+) Chemical compound [V+5] DIMMBYOINZRKMD-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention provides an antioxidant hot-work die steel and a preparation method thereof, and the antioxidant hot-work die steel is characterized in that: the steel contains, by mass, 0.15 to 0.30% of C, 10 to 13% of Cr, 1.0 to 2.5% of Ni, 1.5 to 3.0% of Mo, 0.5 to 1.5% of Co, 0.8% or less of Si, and 0.8% or less of Mn, and further contains, as other elements, 1% or less of W, 0.9% or less of V, and 0.3% or less of Nb, with the balance being Fe, and trace impurities which are difficult to avoid in steel. The steel has the high temperature strength above 600 ℃ superior to H13 steel and 3Cr2W8V steel, has good thermal fatigue resistance, and has corrosion resistance and oxidation resistance superior to H13 and other existing hot work die steels.
Description
Technical Field
The invention relates to alloy steel, in particular to antioxidant hot work die steel and a preparation method thereof, belonging to the field of metal materials.
Background
The mould is the basic process equipment of industrial production, and in industrial departments such as machinery, national defense, metallurgy, light industry, electronics and the like, a considerable part of parts are formed by the mould. The die ensures high-product and high-efficiency production and reduces production cost in the manufacturing industry. The mold industry plays an important role in national economy. Mold technology has become an important mark for measuring the manufacturing level of national products, and the continuous expansion of the application field of the mold puts more and higher requirements on the mold. According to the service conditions of the die, the die steel can be divided into four categories, including cold-work die steel, hot-work die steel, plastic die steel and plastic die steel. The hot working die is a tool for manufacturing a desired product from a heated metal or a liquid metal, such as a hot forging die, a hot heading die, a hot extrusion die, a die casting die, a high-speed forming die, and the like, and various die steels used are collectively called hot working die steels.
The hot die steel works in a high-temperature complex environment and bears a large impact force, after a die cavity is contacted with high-temperature metal, the local temperature reaches 500-. At present, 3Cr2W8V and 4Cr5MoSiV1(H13 steel) and the like are commonly used as hot work die steel materials. When the hot forging die, the die-casting die and the hot extrusion die are made of the die steel materials, because the high-temperature strength is low, the oxidation resistance and the thermal fatigue resistance are poor, oxidation and deformation are generated in the using process, thermal fatigue cracks (cracks) appear on the inner surface of a cavity, the service life of the die is shortened, and the surface quality of a formed part is also reduced.
The invention provides oxidation-resistant hot-work die steel which has high-temperature strength above 600 ℃ superior to H13 steel and 3Cr2W8V steel, has good thermal fatigue resistance, and has corrosion resistance and oxidation resistance superior to current hot-work die steel such as H13.
Disclosure of Invention
The invention provides oxidation-resistant hot-work die steel which has high-temperature strength above 600 ℃ superior to H13 steel and 3Cr2W8V steel, has good thermal fatigue resistance, and has corrosion resistance and oxidation resistance superior to current hot-work die steel such as H13.
The oxidation-resistant hot-work die steel is characterized in that:
0.15 to 0.30% of C, 10 to 13% of Cr, 1.0 to 2.5% of Ni, 1.5 to 3.0% of Mo, 0.5 to 1.5% of Co, 0.8% or less of Si, 0.8% or less of Mn, and the balance Fe and trace impurities which are difficult to avoid in steel.
Further, the composition further contains 1% or less of W by mass.
Further, it contains 0.9% or less of V in terms of mass ratio.
Further, 0.3% or less of Nb is contained in mass ratio.
The preparation method of the oxidation-resistant hot-work die steel is characterized by comprising the following steps: smelting by adopting vacuum induction smelting and electroslag, or adopting an electric furnace and AOD/VD and electroslag remelting method; homogenizing the smelting blank at 1150-1250 ℃, and then performing hot processing, wherein the initial forging/rolling temperature is 1050-1150 ℃, and the termination temperature is 800 ℃; and (3) carrying out annealing or normalizing and tempering on the blank obtained by hot working, and then carrying out quenching and tempering.
Further, the annealing temperature is 850-900 ℃.
Further, the normalizing and tempering temperatures are as follows: the normalizing temperature is 1050-1150 ℃, and the tempering temperature is 680-750 ℃.
Further, the quenching and tempering refers to a comprehensive heat treatment process of quenching and tempering heat treatment; the quenching heat treatment temperature is 1000-1150 ℃, and the quenching adopts an oil cooling or water cooling mode; and heating the blank to 580-640 ℃ after quenching, and carrying out tempering heat treatment.
The actions of the respective constituent elements of the steel of the present invention and the selection of the content ranges will be further described below, and in the following description, the addition amounts of the elements are expressed in mass ratio (%).
The carbon (C) can improve the quenching hardness and the tempered hardness of the steel, and the C content is higher than 0.15% in order to ensure that the material after quenching and tempering has higher strength. However, since too high a content of C is disadvantageous in impact toughness, the content of C needs to be controlled, and in the present invention, the content of C is controlled to 0.30% or less.
Chromium (Cr) is an essential element for obtaining good corrosion resistance and oxidation resistance, and Cr in steel can combine with oxygen to form a dense oxide film on the surface, thereby contributing to the improvement of oxidation resistance. In order to ensure the oxidation resistance of the steel, the Cr content is higher than 10.0 percent. However, when Cr is excessively added, high-temperature ferrite is likely to occur to deteriorate the mechanical properties, and therefore, Cr is limited to 13.0% or less. Therefore, the Cr content is controlled to be 10.0-13.0%.
Nickel (Ni) can enlarge the austenite phase region, inhibit the formation of ferrite and improve the plasticity and toughness of the material. In order to sufficiently obtain the above-mentioned effects, the lower limit of the amount of Ni to be added needs to be 1.0%. However, the addition of too much Ni not only increases the cost of the alloy but also is disadvantageous in terms of heat resistance. From the above points, the amount of Ni added in the steel of the present invention is controlled to be 1.0 to 2.5%.
Molybdenum (Mo) forms a fine stable M in steel2The C-type carbide stabilizes the tempered structure, improves the heat strength of the material, and simultaneously, the high-hardness dispersed carbide particles can have better wear resistance. However, the Mo content should not be too high, otherwise the impact toughness is unfavourable. From the above points, the amount of Mo to be added is required to be 1.5 to 3.0%.
Cobalt (Co) has oxidation resistance, Co being against M2The precipitation strengthening of the C-type carbide has a good promoting effect, the heat strength of the material can be improved, and the formation of ferrite can be inhibited without reducing the critical temperature of the steel. However, Co is expensive and should be used in an amount as small as possible. From the above points, the amount of Co added is required to be 0.5 to 1.5%.
Silicon (Si) is a deoxidizing material, and the addition of too high a content of Si will be detrimental to toughness, generally controlled below 0.8%, and within this range there is no significant impact on texture and mechanical properties. Therefore, the Si content in the steel of the present invention is controlled to be 0.8% or less.
Manganese (Mn) is added as a deoxidizer and a desulfurizer, and when it exceeds 0.8%, it will also adversely affect toughness. Therefore, the Mn content is controlled to 0.8% or less.
Tungsten (W) acts similarly to Mo as another element, and can increase the effect of secondary hardening to improve hardness after tempering, contributing to improvement of heat resistance of the material, and can further improve the effect by composite addition of W and Mo. However, in order to prevent the impact toughness from being lowered due to too large secondary hardening, the amount of W to be added is controlled, and the W content of the steel of the present invention is controlled to be 1.0% or less.
Vanadium (V) is similar to Mo, and VC carbide can be formed in the tempering process, which is beneficial to improving the heat resistance and wear resistance of the material. However, V is not preferred to be too large because it lowers the impact toughness of the material. From the above points, the amount of V added is controlled to 0.9% or less.
Niobium (Nb) is a strong carbide forming element, can be combined with carbon to form stable MC type carbide, and can play a role in controlling grain growth during high-temperature austenitization so as to achieve the effect of grain refinement. Too high Nb content results in formation of more primary carbides by liquation, which is detrimental to impact toughness. In order to sufficiently ensure the above effects, the content of Nb is controlled to 0.3 or less.
The inevitable impurities in the present invention are components originally contained in the raw materials or included in the present invention by mixing in during the smelting process, and are not intentionally added components.
The oxidation-resistant hot-work die steel adopts a preparation method similar to that in the prior art: vacuum induction melting and electroslag are recommended for smelting, and electric furnace, AOD/VD, electroslag remelting and other smelting methods which can ensure the requirements of the invention can also be adopted. Homogenizing the smelting blank at 1150-1250 ℃, and then performing hot working at 1050-1150 ℃ of the initial forging/rolling temperature and 800 ℃ of the final temperature. Completely annealing the blank obtained by hot processing at 850-900 ℃ or normalizing at 1050-1150 ℃ and tempering at 680-750 ℃; and then carrying out thermal refining. The thermal refining in the present invention refers to a comprehensive heat treatment process of quenching and tempering heat treatment. And (3) immediately carrying out tempering heat treatment on the blank after quenching heat treatment, wherein the temperature range is 580-640 ℃, and slowly cooling after heating and maintaining. The quenching treatment is heat treatment for heating the steel to an austenite phase region to dissolve alloy elements such as Cr, Ni, Mo, Co, W, V, Nb and the like into a structure, and then cooling to obtain a martensite structure, wherein the austenitizing temperature of the steel is 1000-1150 ℃, and the steel is quenched by oil cooling or water cooling after being heated and kept. The low-carbon high-density dislocation lath type martensite obtained by quenching and quenching has good plasticity and toughness, is a structure with excellent matching of strength and toughness, and can precipitate high-density, multi-type and multi-size carbide dispersoids (Cr) which are uniformly distributed on the lath type martensite matrix through tempering at 580-640 ℃ after quenching heat treatment7C3、(Mo,W)2C. VC, NbC) to achieve high temperature strength and thermal fatigue resistance.
Drawings
FIG. 1 is a graph showing the high temperature strength comparison between the steel of the present invention and H13 and 3Cr2W8V steels.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The martensitic stainless steel of the present invention was smelted by vacuum induction smelting and electroslag remelting, and the chemical compositions are shown in table 1. The smelting blank is homogenized at 1200 ℃, and then forged, wherein the initial forging temperature is 1150 ℃, and the termination temperature is 800 ℃. Finally obtaining the bar stock with the diameter of 50 mm. Quenching the bar stock at 1100 deg.c for 1 hr, and quenching in water. After quenching treatment, the steel is heated at 600 ℃ and is subjected to tempering treatment of slow cooling after heat preservation for 2 hours, typical mechanical properties of the invention steel are shown in Table 2, and the invention steel has good room-temperature mechanical properties.
TABLE 1
TABLE 2
Example 1 the steel of the present invention was quenched at 1100 c and tempered at 600 c, and the instantaneous high temperature tensile properties at room temperature to 700 c were measured as shown in fig. 1. The tensile properties at the temperatures of examples 2, 3 and 4 are similar and are not repeated. For comparison, the high temperature instantaneous tensile property data for H13 steel and 3Cr2W8V steel are added. Data of H13 steel were obtained from the literature [ Zhuzong, China Hot die Steel Performance data set (XI), mechanical engineering materials, 2001, Vol.25, No. 12, pages 36-40 ], and data of 3Cr2W8V steel were obtained from the literature [ Zhuzong, China Hot die Steel Performance data set (VII), mechanical engineering materials, 2001, Vol.25, No. 8, pages 38-42 ]. As can be seen from FIG. 1, the steel of the present invention has good heat resistance, and is not easy to degrade in structure and performance at high temperature, so the steel has high thermal fatigue resistance.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (4)
1. The oxidation-resistant hot-work die steel is characterized in that:
0.15-0.30% of C, 10-13% of Cr, 1.0-2.5% of Ni, 1.5-3.0% of Mo, 0.5-1.5% of Co, less than 0.8% of Si, less than 0.8% of Mn, and the balance of Fe and trace impurities which are difficult to avoid in steel;
the preparation method of the oxidation-resistant hot-work die steel adopts vacuum induction melting and electroslag smelting, or adopts an electric furnace and AOD/VD and electroslag remelting method; homogenizing the smelting blank at 1150-1250 ℃, and then performing hot processing, wherein the initial forging/rolling temperature is 1050-1150 ℃, and the termination temperature is 800 ℃; carrying out annealing or normalizing and tempering treatment on the blank obtained by hot processing, and then carrying out quenching and tempering treatment;
the quenching and tempering treatment refers to a comprehensive heat treatment process of quenching and tempering heat treatment; the quenching heat treatment temperature is 1000-1150 ℃, and the quenching adopts an oil cooling or water cooling mode; and heating the blank to 580-640 ℃ after quenching, and carrying out tempering heat treatment.
2. The oxidation-resistant hot-work die steel as set forth in claim 1, wherein:
at least one of W of 1% or less, V of 0.9% or less, and Nb of 0.3% or less is contained in a mass ratio.
3. The oxidation-resistant hot-work die steel as set forth in claim 1, wherein: the annealing temperature is 850-900 ℃.
4. The oxidation-resistant hot-work die steel as set forth in claim 1, wherein: the normalizing and tempering treatment temperature is as follows: the normalizing temperature is 1050-1150 ℃, and the tempering temperature is 680-750 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170339.9A CN109735777B (en) | 2019-03-06 | 2019-03-06 | Anti-oxidation hot-work die steel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170339.9A CN109735777B (en) | 2019-03-06 | 2019-03-06 | Anti-oxidation hot-work die steel and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109735777A CN109735777A (en) | 2019-05-10 |
| CN109735777B true CN109735777B (en) | 2020-10-13 |
Family
ID=66369562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910170339.9A Active CN109735777B (en) | 2019-03-06 | 2019-03-06 | Anti-oxidation hot-work die steel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109735777B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016619B (en) * | 2019-05-28 | 2020-01-21 | 营口市特殊钢锻造有限责任公司 | Mining high-strength wear-resistant material and preparation method thereof |
| CN110438310B (en) * | 2019-07-19 | 2020-08-14 | 北京科技大学 | Hot work die steel and heat treatment method thereof |
| CN110551880A (en) * | 2019-10-24 | 2019-12-10 | 成都先进金属材料产业技术研究院有限公司 | softening heat treatment process for small-size 22Si2MnCrNi2MoA steel rolled material |
| WO2021208181A1 (en) * | 2020-04-14 | 2021-10-21 | 北京科技大学 | Low-temperature, high-toughness, high-temperature, high-intensity and high-hardenability hot mold steel and preparation method therefor |
| CN111876662B (en) * | 2020-06-18 | 2022-04-12 | 江阴兴澄特种钢铁有限公司 | Hot-work die steel plate and manufacturing method thereof |
| CN113681005A (en) * | 2021-08-26 | 2021-11-23 | 宁波匠心快速成型技术有限公司 | Stainless steel 3D printing material with ultrahigh-temperature strength, preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557985A (en) * | 2004-01-20 | 2004-12-29 | 吉林大学 | Metamorphic hot-work die steel |
| CN101403074A (en) * | 2008-09-19 | 2009-04-08 | 周向儒 | Novel chromium system hot die steel and thermal treatment process thereof |
| CN102719758A (en) * | 2012-06-25 | 2012-10-10 | 山东理工大学 | Anti-oxidation and anti-thermal fatigue hot working die steel and manufacturing method thereof |
| CN106435353A (en) * | 2016-08-24 | 2017-02-22 | 营口市特殊钢锻造有限责任公司 | Cr5 series hot work die steel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3535112B2 (en) * | 2001-05-01 | 2004-06-07 | 株式会社日本製鋼所 | Hot tool steel excellent in erosion resistance and high temperature strength and high temperature member made of the hot tool steel |
| CN101294259A (en) * | 2007-04-23 | 2008-10-29 | 大同特殊钢株式会社 | Hot die steel for die-casting |
| US20080264526A1 (en) * | 2007-04-27 | 2008-10-30 | Daido Tokushuko Kabushiki Kaisha | Hot working die steel for die-casting |
| CN101880829B (en) * | 2010-07-09 | 2013-10-30 | 中国第一汽车集团公司 | Magnesium alloy hot die steel |
| CN103276298B (en) * | 2013-06-09 | 2015-08-05 | 河冶科技股份有限公司 | It is high hard that high-ductility is cold and hot doubles as die steel and production method thereof |
| CN106086688A (en) * | 2016-08-29 | 2016-11-09 | 营口市特殊钢锻造有限责任公司 | A kind of Cr3 series hot die steel and heat treatment method thereof |
-
2019
- 2019-03-06 CN CN201910170339.9A patent/CN109735777B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557985A (en) * | 2004-01-20 | 2004-12-29 | 吉林大学 | Metamorphic hot-work die steel |
| CN101403074A (en) * | 2008-09-19 | 2009-04-08 | 周向儒 | Novel chromium system hot die steel and thermal treatment process thereof |
| CN102719758A (en) * | 2012-06-25 | 2012-10-10 | 山东理工大学 | Anti-oxidation and anti-thermal fatigue hot working die steel and manufacturing method thereof |
| CN106435353A (en) * | 2016-08-24 | 2017-02-22 | 营口市特殊钢锻造有限责任公司 | Cr5 series hot work die steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109735777A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109735777B (en) | Anti-oxidation hot-work die steel and preparation method thereof | |
| US8017071B2 (en) | Corrosion-resistant, cold-formable, machinable, high strength, martensitic stainless steel | |
| CN108220815B (en) | Hot work die steel with high heat resistance and high impact toughness for hot forging and preparation method thereof | |
| CN104674132A (en) | Hybrid mold steel and manufacturing method thereof | |
| CN100366779C (en) | Stone material cutting saw blade steel and its manufacturing method | |
| CN104313462A (en) | High wear-resistant hot-stamping die steel and manufacturing method thereof | |
| CN106566997A (en) | Hot work die steel for high-performance die-casting die and metallurgy manufacturing method thereof | |
| CN109835013B (en) | High-strength wear-resistant composite steel plate and manufacturing method thereof | |
| CN101880833A (en) | Stainless bearing steel adopting microalloying of rare earth and applicable to manufacturing miniature and small-size bearings and manufacturing method thereof | |
| JP2020536169A (en) | Use of stainless steel, pre-alloy powder and pre-alloy powder obtained by atomizing stainless steel | |
| CN105543647A (en) | High-strength special steel alloy and preparation process thereof | |
| CN109609729B (en) | Stainless steel plate with 650 MPa-grade yield strength and manufacturing method thereof | |
| CN105177430A (en) | Alloy tool steel and production method thereof | |
| CN101372734A (en) | Martensite stainless steel and manufacturing method thereof | |
| CN102859021A (en) | Stainless steel for molds having a lower delta-ferrite content | |
| KR20160122804A (en) | Stainless steel for a plastic mould and a mould made of the stainless steel | |
| CN109694983B (en) | High-mirror-surface corrosion-resistant plastic die steel and manufacturing method thereof | |
| CN105950969A (en) | High-heat-resistant austenite die steel and preparation method thereof | |
| WO2021208181A1 (en) | Low-temperature, high-toughness, high-temperature, high-intensity and high-hardenability hot mold steel and preparation method therefor | |
| CN101638750A (en) | Martensitic stainless steel for cutting tool and manufacturing method thereof | |
| CN109321829B (en) | Stainless steel plate with yield strength of 900MPa and manufacturing method thereof | |
| CN105483562A (en) | High-bending-resistance, high-strength and high-toughness die steel and manufacturing method thereof | |
| CN109881123B (en) | 1000 Mpa-grade high-strength metastable austenite-martensite stainless steel | |
| CN102719758A (en) | Anti-oxidation and anti-thermal fatigue hot working die steel and manufacturing method thereof | |
| CN109835015B (en) | Wear-resistant composite steel plate and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |