CN111057952A - High-isotropy hot work die steel and heat treatment process thereof - Google Patents
High-isotropy hot work die steel and heat treatment process thereof Download PDFInfo
- Publication number
- CN111057952A CN111057952A CN201911416643.3A CN201911416643A CN111057952A CN 111057952 A CN111057952 A CN 111057952A CN 201911416643 A CN201911416643 A CN 201911416643A CN 111057952 A CN111057952 A CN 111057952A
- Authority
- CN
- China
- Prior art keywords
- die steel
- work die
- hot
- heat treatment
- hot work
- 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.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses high-isotropy hot-work die steel and a heat treatment process thereof, the components of the hot-work die steel are optimized and adjusted, the hot-work die steel has better performance after heat treatment, the heat treatment process of specific steel grades is designed in a targeted manner, sectional quenching, deep cooling and tempering are carried out, residual austenite and stress elimination of the heat treatment of the specific steel grades are met through the reasonable sectional quenching process, the deep cooling process and the tempering process, and the internal structure distribution is uniform. The hot work die steel subjected to heat treatment has higher high-temperature strength and good toughness, can bear larger impact force, and meets the use requirement of a hot forging die. The wear resistance is also better, and the high-temperature oxidation corrosion and turning chip grinding can be borne. Also has high thermal stability and excellent thermal fatigue resistance.
Description
Technical Field
The invention relates to high-isotropy hot-work die steel, and belongs to the technical field of steel grades and corresponding heat treatment processes.
Background
The hot work die steel is alloy tool steel suitable for manufacturing dies for hot deformation processing of metals, such as a hot forging die, a hot extrusion die, a die casting die, a hot heading die and the like. Since the hot working mold works under high temperature and high pressure for a long time, the mold material is required to have high strength, hardness and thermal stability, and particularly, high heat strength, thermal fatigue, toughness and wear resistance.
In the prior art, the hot work die steel treatment is generally a quenching and tempering heat treatment process or an isothermal quenching and low-temperature tempering treatment process, the quenching stage is particularly important for the physical properties of high-speed steel, the processes in the prior quenching stage are all rough, the temperature is directly raised to austenitizing temperature and kept, tissue components cannot be sufficiently homogenized, a sectional quenching process also exists, but the division is rough, the pertinence is poor, and the physical properties of the obtained high-speed steel are not ideal.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the high-tropism hot work die steel and the heat treatment process thereof aiming at the problem that the heat stability and the form stability of the traditional hot work die steel are difficult to be compatible.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
high-tropism hot-work die steel,
the hot work die steel comprises the following chemical components in percentage by weight:
C：0.35～0.42％，
Si：0.3～0.45％，
Mn：0.3～0.36％，
Cr：5～5.2％，
Mo：1.6～1.8％，
V：0.8～1.0％，
W：0.3～0.5％，
rare earth: 0.3 to 0.5 percent,
S≤0.005％，
P≤0.005％，
the balance being Fe and unavoidable impurities.
Preferably, the hot-work die steel comprises the following chemical components in percentage by weight:
C：0.36％，
Si：0.32％，
Mn：0.36％，
Cr：5％，
Mo：1.7％，
V：0.85％，
W：0.39％，
rare earth: 0.45 percent of the total weight of the mixture,
the balance being Fe and unavoidable impurities.
Preferably, the hot-work die steel comprises the following chemical components in percentage by weight:
C：0.41％，
Si：0.42％，
Mn：0.3％，
Cr：5.1％，
Mo：1.6％，
V：0.8％，
W：0.5％，
rare earth: 0.5 percent of the total weight of the mixture,
S：0.002％，
the balance being Fe and unavoidable impurities.
Preferably, the hot-work die steel comprises the following chemical components in percentage by weight:
C：0.37％，
Si：0.32％，
Mn：0.35％，
Cr：5.2％，
Mo：1.8％，
V：0.8％，
W：0.5％，
rare earth: 0.4 percent of the total weight of the mixture,
the balance being Fe and unavoidable impurities.
Preferably, the hot-work die steel comprises the following chemical components in percentage by weight:
C：0.42％，
Si：0.45％，
Mn：0.3％，
Cr：5％，
Mo：1.6％，
V：0.8％，
W：0.3％，
rare earth: 0.3 percent of the total weight of the mixture,
P：0.001％，
the balance being Fe and unavoidable impurities.
The invention also provides a heat treatment process for heat treatment of the high-tropism hot work die steel, which comprises the following steps of:
s1 a first heating temperature rising and heat preservation step,
heating to 564 ℃ at a first-order heating rate of 3 ℃/min, and carrying out first-order heat preservation;
s2 second-order heating, temperature rising and heat preservation steps,
heating to 848 ℃ at a second-order heating rate of 3.5 ℃/min, and carrying out second-order heat preservation;
s3 three-step heating temperature rising and heat preservation steps,
heating to 1029 ℃ at a third-order heating rate of 8 ℃/min, and carrying out third-order heat preservation;
a cooling step of S4 is carried out,
keeping the pressure in the furnace at 8.5bar for 20min, keeping the pressure at 6bar for 50min, discharging, naturally cooling to 50 ℃ of the core temperature, and entering the next procedure;
the step of deep cooling of S5 is carried out,
cooling to-80 deg.C within 60min, maintaining for 20min, cooling to-130 deg.C within 25min, maintaining for 15min, cooling to-165 deg.C within 10min, maintaining for 120min, and naturally cooling under zero pressure;
the tempering step of S6 is carried out,
adopting three-stage tempering process, and sequentially carrying out 565 ℃, 603 ℃ and 575 ℃ tempering.
The invention has the following beneficial effects:
1. the hot forging die has high-temperature strength and good toughness, can bear large ground impact force, and meets the use requirement of the hot forging die.
2. The wear resistance is also better, and the high-temperature oxidation corrosion and turning chip grinding can be borne.
3. Also has high thermal stability and excellent thermal fatigue resistance.
Drawings
FIG. 1 is a photograph of the metallographic structure at 100 times of a first sample of the invention.
FIG. 2 is a photograph of the metallographic structure of the sample two according to the invention at 200 times.
FIG. 3 is a 500-fold metallographic structure photograph of inventive sample three.
Detailed Description
The invention provides high-tropism hot work die steel and a heat treatment process thereof. The technical solution of the present invention is described in detail below with reference to the accompanying drawings so that it can be more easily understood and appreciated.
The high-tropism hot-work die steel comprises the following chemical components in percentage by weight:
C：0.35～0.42％，
Si：0.3～0.45％，
Mn：0.3～0.36％，
Cr：5～5.2％，
Mo：1.6～1.8％，
V：0.8～1.0％，
W：0.3～0.5％，
rare earth: 0.3 to 0.5 percent,
S≤0.005％，
P≤0.005％，
the balance being Fe and unavoidable impurities.
Wherein the rare earth is Baotou rare earth.
Example one
The hot-working die steel comprises the following chemical components in percentage by weight: c: 0.36%, Si: 0.32%, Mn: 0.36%, Cr: 5%, Mo: 1.7%, V: 0.85%, W: 0.39%, rare earth: 0.45 percent, and the balance of Fe and inevitable impurities.
Example two
The hot-working die steel comprises the following chemical components in percentage by weight: c: 0.41%, Si: 0.42%, Mn: 0.3%, Cr: 5.1%, Mo: 1.6%, V: 0.8%, W: 0.5%, rare earth: 0.5%, S: 0.002%, and the balance of Fe and unavoidable impurities.
EXAMPLE III
The hot-working die steel comprises the following chemical components in percentage by weight: c: 0.37%, Si: 0.32%, Mn: 0.35%, Cr: 5.2%, Mo: 1.8%, V: 0.8%, W: 0.5%, rare earth: 0.4%, the balance being Fe and unavoidable impurities.
Example four
The hot-working die steel comprises the following chemical components in percentage by weight: c: 0.42%, Si: 0.45%, Mn: 0.3%, Cr: 5%, Mo: 1.6%, V: 0.8%, W: 0.3%, rare earth: 0.3%, P: 0.001%, and the balance of Fe and unavoidable impurities.
The steel grades of the four examples were heat treated separately: heating to 564 ℃ at a first-order heating rate of 3 ℃/min, and carrying out first-order heat preservation; heating to 848 ℃ at a second-order heating rate of 3.5 ℃/min, and carrying out second-order heat preservation; heating to 1029 ℃ at a third-order heating rate of 8 ℃/min, and carrying out third-order heat preservation.
Keeping the pressure in the furnace at 8.5bar for 20min, keeping the pressure at 6bar for 50min, discharging and naturally cooling until the core temperature reaches 50 ℃.
Cooling to-80 deg.C within 60min for 20min, cooling to-130 deg.C within 25min for 15min, cooling to-165 deg.C within 10min for 120min, and naturally cooling under zero pressure.
Adopting three-stage tempering process, and sequentially carrying out 565 ℃, 603 ℃ and 575 ℃ tempering.
Samples I, II, III and IV corresponding to the first, third and fourth examples were obtained and tested in each test.
As shown in fig. 1 to 3, the metallographic structure photographs of the sample i, the sample ii and the sample iii are shown, respectively, and the surfaces thereof have no residual austenite and the structures are uniformly distributed.
And (3) carrying out high-temperature hardness test on the hot-work die steel of the samples I to IV:
at a test temperature of 100 ℃, the first sample is 51.2HRC, the second sample is 50.9HRC, the third sample is 51.6HRC, and the fourth sample is 51.3HRC, and at a test temperature of 400 ℃, the first sample is 47.8HRC, the second sample is 47.6HRC, the third sample is 48.2HRC, and the fourth sample is 48.1 HRC. The heat resistance and the impact resistance are excellent.
And (3) testing the room-temperature mechanical properties of the hot-work die steel of the samples I to IV:
sample one had a hardness of 52.2HRC, tensile strength Rm of 1950MPa, yield strength Rp0.2 of 1580MPa, elongation of 12.3% and reduction of area of 50%. The second sample hardness is 51.7HRC, the tensile strength Rm is 1930MPa, the yield strength Rp0.2 is 1570MPa, the elongation is 12.2 percent, and the reduction of area is 50 percent. The sample had a three-hardness of 51.9HRC, a tensile strength Rm of 1940MPa, a yield strength Rp0.2 of 1590MPa, an elongation of 12.2% and a reduction of area of 49%. The four-hardness of the sample is 52.3HRC, the tensile strength Rm is 1960MPa, the yield strength Rp0.2 is 1585MPa, the elongation is 12.2 percent, and the reduction of area is 51 percent.
Through the above description, it can be found that the heat treatment process of the hot die steel of the invention, the hot die steel after the heat treatment process has higher high-temperature strength and good toughness, can bear larger impact force, and meets the use requirements of the hot forging die. The wear resistance is also better, and the high-temperature oxidation corrosion and turning chip grinding can be borne. Also has high thermal stability and excellent thermal fatigue resistance.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (6)
1. The high-tropism hot-work die steel is characterized in that,
the hot work die steel comprises the following chemical components in percentage by weight:
C：0.35～0.42％，
Si：0.3～0.45％，
Mn：0.3～0.36％，
Cr：5～5.2％，
Mo：1.6～1.8％，
V：0.8～1.0％，
W：0.3～0.5％，
rare earth: 0.3 to 0.5 percent,
S≤0.005％，
P≤0.005％，
the balance being Fe and unavoidable impurities.
2. An isotropic hot work die steel as claimed in claim 1,
the hot work die steel comprises the following chemical components in percentage by weight:
C：0.36％，
Si：0.32％，
Mn：0.36％，
Cr：5％，
Mo：1.7％，
V：0.85％，
W：0.39％，
rare earth: 0.45 percent of the total weight of the mixture,
the balance being Fe and unavoidable impurities.
3. An isotropic hot work die steel as claimed in claim 1,
the hot work die steel comprises the following chemical components in percentage by weight:
C：0.41％，
Si：0.42％，
Mn：0.3％，
Cr：5.1％，
Mo：1.6％，
V：0.8％，
W：0.5％，
rare earth: 0.5 percent of the total weight of the mixture,
S：0.002％，
the balance being Fe and unavoidable impurities.
4. An isotropic hot work die steel as claimed in claim 1,
the hot work die steel comprises the following chemical components in percentage by weight:
C：0.37％，
Si：0.32％，
Mn：0.35％，
Cr：5.2％，
Mo：1.8％，
V：0.8％，
W：0.5％，
rare earth: 0.4 percent of the total weight of the mixture,
the balance being Fe and unavoidable impurities.
5. An isotropic hot work die steel as claimed in claim 1,
the hot work die steel comprises the following chemical components in percentage by weight:
C：0.42％，
Si：0.45％，
Mn：0.3％，
Cr：5％，
Mo：1.6％，
V：0.8％，
W：0.3％，
rare earth: 0.3 percent of the total weight of the mixture,
P：0.001％，
the balance being Fe and unavoidable impurities.
6. A heat treatment process for heat treatment of the highly isotropic hot work die steel according to any one of claims 1 to 5, characterized by comprising the steps of:
s1 a first heating temperature rising and heat preservation step,
heating to 564 ℃ at a first-order heating rate of 3 ℃/min, and carrying out first-order heat preservation;
s2 second-order heating, temperature rising and heat preservation steps,
heating to 848 ℃ at a second-order heating rate of 3.5 ℃/min, and carrying out second-order heat preservation;
s3 three-step heating temperature rising and heat preservation steps,
heating to 1029 ℃ at a third-order heating rate of 8 ℃/min, and carrying out third-order heat preservation;
a cooling step of S4 is carried out,
keeping the pressure in the furnace at 8.5bar for 20min, keeping the pressure at 6bar for 50min, discharging, naturally cooling to 50 ℃ of the core temperature, and entering the next procedure;
the step of deep cooling of S5 is carried out,
cooling to-80 deg.C within 60min, maintaining for 20min, cooling to-130 deg.C within 25min, maintaining for 15min, cooling to-165 deg.C within 10min, maintaining for 120min, and naturally cooling under zero pressure;
the tempering step of S6 is carried out,
adopting three-stage tempering process, and sequentially carrying out 565 ℃, 603 ℃ and 575 ℃ tempering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416643.3A CN111057952A (en) | 2019-12-31 | 2019-12-31 | High-isotropy hot work die steel and heat treatment process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416643.3A CN111057952A (en) | 2019-12-31 | 2019-12-31 | High-isotropy hot work die steel and heat treatment process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111057952A true CN111057952A (en) | 2020-04-24 |
Family
ID=70305751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911416643.3A Pending CN111057952A (en) | 2019-12-31 | 2019-12-31 | High-isotropy hot work die steel and heat treatment process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111057952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112501402A (en) * | 2020-11-30 | 2021-03-16 | 昆山博登泰金属制品有限公司 | Heat treatment process of hot work die steel |
| CN117802446A (en) * | 2024-03-01 | 2024-04-02 | 山东天瑞重工有限公司 | Heat treatment process method of low-carbon high-alloy structural steel and hydraulic breaking hammer piston |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1125283A1 (en) * | 1983-08-16 | 1984-11-23 | Институт проблем литья АН УССР | Die steel |
| CN101109035A (en) * | 2007-08-24 | 2008-01-23 | 苏州铭峰精密机械有限公司 | Thermal treatment technique of die steel XW42 |
| CN102296167A (en) * | 2011-08-11 | 2011-12-28 | 南车眉山车辆有限公司 | Cryogenic treatment process for 9SiCr die steel used for railway freight cars |
| CN102605261A (en) * | 2012-03-23 | 2012-07-25 | 宝山钢铁股份有限公司 | Hot stamping mould steel and method for manufacturing same |
| CN103276298A (en) * | 2013-06-09 | 2013-09-04 | 河冶科技股份有限公司 | High-hardness high-tenacity cold and hot work die steel and production method thereof |
| CN104278200A (en) * | 2014-09-17 | 2015-01-14 | 北京科技大学 | High-hot-strength spray-formed hot work die steel and preparation method thereof |
| CN105803314A (en) * | 2016-05-09 | 2016-07-27 | 天津钢研海德科技有限公司 | High-grade hot work die steel with high performance and manufacturing method of high-grade hot work die steel |
| CN106544592A (en) * | 2016-11-01 | 2017-03-29 | 辽宁乾金金属材料开发有限公司 | Obdurability hot die steel and its production method |
| CN109972059A (en) * | 2017-12-27 | 2019-07-05 | 天工爱和特钢有限公司 | A kind of high-strength die steel |
| CN110195194A (en) * | 2018-11-08 | 2019-09-03 | 李岩 | A kind of preparation method of hot die steel |
| CN110314954A (en) * | 2019-07-29 | 2019-10-11 | 中国兵器工业第五九研究所 | A kind of preparation method of high viscosity metal cold-extrusion shaping mold |
-
2019
- 2019-12-31 CN CN201911416643.3A patent/CN111057952A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1125283A1 (en) * | 1983-08-16 | 1984-11-23 | Институт проблем литья АН УССР | Die steel |
| CN101109035A (en) * | 2007-08-24 | 2008-01-23 | 苏州铭峰精密机械有限公司 | Thermal treatment technique of die steel XW42 |
| CN102296167A (en) * | 2011-08-11 | 2011-12-28 | 南车眉山车辆有限公司 | Cryogenic treatment process for 9SiCr die steel used for railway freight cars |
| CN102605261A (en) * | 2012-03-23 | 2012-07-25 | 宝山钢铁股份有限公司 | Hot stamping mould steel and method for manufacturing same |
| CN103276298A (en) * | 2013-06-09 | 2013-09-04 | 河冶科技股份有限公司 | High-hardness high-tenacity cold and hot work die steel and production method thereof |
| CN104278200A (en) * | 2014-09-17 | 2015-01-14 | 北京科技大学 | High-hot-strength spray-formed hot work die steel and preparation method thereof |
| CN105803314A (en) * | 2016-05-09 | 2016-07-27 | 天津钢研海德科技有限公司 | High-grade hot work die steel with high performance and manufacturing method of high-grade hot work die steel |
| CN106544592A (en) * | 2016-11-01 | 2017-03-29 | 辽宁乾金金属材料开发有限公司 | Obdurability hot die steel and its production method |
| CN109972059A (en) * | 2017-12-27 | 2019-07-05 | 天工爱和特钢有限公司 | A kind of high-strength die steel |
| CN110195194A (en) * | 2018-11-08 | 2019-09-03 | 李岩 | A kind of preparation method of hot die steel |
| CN110314954A (en) * | 2019-07-29 | 2019-10-11 | 中国兵器工业第五九研究所 | A kind of preparation method of high viscosity metal cold-extrusion shaping mold |
Non-Patent Citations (1)
| Title |
|---|
| 曾正明: "《实用金属材料选用手册》", 30 March 2012, 北京：机械工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112501402A (en) * | 2020-11-30 | 2021-03-16 | 昆山博登泰金属制品有限公司 | Heat treatment process of hot work die steel |
| CN112501402B (en) * | 2020-11-30 | 2022-12-20 | 昆山博登泰金属制品有限公司 | Heat treatment process of hot work die steel |
| CN117802446A (en) * | 2024-03-01 | 2024-04-02 | 山东天瑞重工有限公司 | Heat treatment process method of low-carbon high-alloy structural steel and hydraulic breaking hammer piston |
| CN117802446B (en) * | 2024-03-01 | 2024-07-02 | 山东天瑞重工有限公司 | Heat treatment process method of low-carbon high-alloy structural steel and hydraulic breaking hammer piston |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101928878B (en) | Axle shaft steel and production method thereof | |
| CN106811580B (en) | A kind of annealing process of H13 hot die steels | |
| CN101365819A (en) | Steel wire having excellent cold heading quality and quenching property and method for producing the same | |
| CN109136765B (en) | Hot work die steel and preparation method thereof | |
| CN105803314A (en) | High-grade hot work die steel with high performance and manufacturing method of high-grade hot work die steel | |
| EP4261320A1 (en) | High-strength and toughness free-cutting non-quenched and tempered round steel and manufacturing method therefor | |
| CN109468538A (en) | A kind of high-performance die-casting die steel DIEMAX and preparation method thereof | |
| CN101886228A (en) | Low carbon martensite aged stainless steel with high strength high toughness and high decay resistance performances | |
| CN111455146A (en) | Strengthening and toughening treatment method for low-alloy martensitic steel and martensitic steel | |
| CN105002433A (en) | Anti-cavitation age-hardening high-polishability plastic die steel and preparation method thereof | |
| CN113846266A (en) | Production method of high-ductility and toughness quenched and tempered steel plate with yield strength of 1300MPa | |
| CN113265588A (en) | Chromium-molybdenum alloy steel forging capable of improving impact performance and manufacturing process thereof | |
| CN108277432A (en) | A kind of cutlery martensite containing nitrogen stainless steel and its manufacturing method | |
| CN111057952A (en) | High-isotropy hot work die steel and heat treatment process thereof | |
| CN106906340A (en) | A kind of fine grain heat treatment method | |
| JP2018012874A (en) | Method of manufacturing steel wire for bolt | |
| KR101449511B1 (en) | Work hardenable yield ratio control steel and method for manufacturing the same | |
| US8377235B2 (en) | Process for forming steel | |
| CN105177455B (en) | A kind of 2400MPa levels High-alloy Ultra-high Strength Steel | |
| CN104818432A (en) | Alloy material for turboset rotor and preparation method thereof | |
| CN109576465B (en) | Steel martensite structure ultra-fining method for die-casting die | |
| CN108866443B (en) | Normalizing type low-yield-ratio high-strength steel plate and preparation method thereof | |
| CN102936695A (en) | High-strength low-temperature pressure vessel steel plate and production method thereof | |
| CN112501402B (en) | Heat treatment process of hot work die steel | |
| CN102181787B (en) | Refractory corrosion-resisting steel as well as preparation and heat treatment 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |