CN105734440A - Corrosion-resistant high-strength die steel - Google Patents
Corrosion-resistant high-strength die steel Download PDFInfo
- Publication number
- CN105734440A CN105734440A CN201610214720.7A CN201610214720A CN105734440A CN 105734440 A CN105734440 A CN 105734440A CN 201610214720 A CN201610214720 A CN 201610214720A CN 105734440 A CN105734440 A CN 105734440A
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- Prior art keywords
- die steel
- quenching
- steel
- mould steel
- corrosion resistance
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Classifications
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- 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
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- 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
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses corrosion-resistant high-strength die steel. The die steel comprises the chemical components of, by mass, 0.5-0.8% of carbon, 1.2-1.5% of chromium, 0.8-1.2% of manganese, 0.3-0.6% of nickel, 1.2-1.8% of silicon, 0.1-0.3% of vanadium, 0.2-0.4% of molybdenum and the balance iron. A pre-hardening treatment process of the die steel includes the following steps of a, quenching, specifically, the die steel is put into a heating furnace to be heated to 500-600 DEG C, is kept at the temperature of 500-600 DEG C for 1-2 h, then continues to be heated to 850-880 DEG C, is kept at the temperature of 850-880 DEG C for 1-1.5 h, and afterwards is subjected to quenching, and cooled in quenching liquid to the temperature of 70-90 DEG C; and b, tempering, specifically, the quenched die steel is put into the heating furnace again to be heated to 180-200 DEG C, kept at the temperature for 0.5-1 h, cooled with the furnace and then discharged out of the furnace. In this way, by optimizing the compositions and proportion of the die steel, the die steel has good corrosion resistance. Meanwhile, by improving the pre-hardening treatment process, the strength of the die steel is effectively improved, and the pre-hardening treatment cost is lowered.
Description
Technical field
The present invention relates to mould steel field, particularly relate to a kind of corrosion resistance high-strength die steel.
Background technology
Mould steel is used to manufacture the steel grade of the moulds such as cold-punching mould, hot-forging die, compression mod.Mould is the main machining tool manufacturing part in the industrial departments such as machine-building, radio meter, motor, electrical equipment, the quality of mould directly affects the quality of pressure processing craft, the precision of product, yield and production cost, and the quality of mould and service life are in addition to by the design of rational structure and machining accuracy, mainly affected by mold materials and heat treatment.When manufacturing mould, for avoiding mould in heat treatment process deform and crack, need mould steel is carried out Pre-hardening treatment before molding, and the subject matter that existing initial curing process exists to be cost high, its intensity does not still reach high-strength die and uses requirement after the pre-hard process of mould steel.
Summary of the invention
Present invention mainly solves technical problem is that: for the deficiencies in the prior art, a kind of corrosion resistance high-strength die steel is provided, by optimizing its composition and proportioning, make it have good corrosion resistance, simultaneously by improving pre-hard process technique, its intensity can be effectively improved, and reduce pre-hard processing cost.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of corrosion resistance high-strength die steel, including: mould steel and the pre-hard process technique that strengthens described mould steel intensity, quality proportioning shared by chemical composition that described mould steel includes and each composition is: carbon 0.5%-0.8%, chromium 1.2%-1.5%, manganese 0.8%-1.2%, nickel 0.3%-0.6%, silicon 1.2%-1.8%, vanadium 0.1%-0.3%, molybdenum 0.2%-0.4%, remaining is ferrum；
Described pre-hard process technique comprises the steps:
A, quenching: mould steel is put into heating furnace and is heated to 500-600 DEG C, be continuously heating to 850-880 DEG C after insulation 1-2h, then be incubated 1-1.5h, then mould steel carry out Quenching Treatment, and is cooled to 70-90 DEG C in quenching liquid；
B, tempering: be heated to 180-200 DEG C in the mould steel after quenching is placed into heating furnace, be incubated 0.5-1h, come out of the stove after furnace cooling.
In a preferred embodiment of the present invention, the programming rate of described heating furnace is 100-120 DEG C/h.
In a preferred embodiment of the present invention, described Quenching Treatment uses shrend or oil quenching mode.
In a preferred embodiment of the present invention, described mould steel also needs to carry out process of refinement before pre-hard process.
The invention has the beneficial effects as follows: the present invention, by adjusting composition and the proportioning of contained chemical element in mould steel, makes mould steel have good corrosion resistance, simultaneously by improving pre-hard process technique, is effectively improved the intensity of mould steel, and reduces pre-hard processing cost.
Detailed description of the invention
Below presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
The embodiment of the present invention includes:
Embodiment one:
A kind of corrosion resistance high-strength die steel, the quality proportioning shared by it chemical composition included and each composition is: carbon 0.5%, chromium 1%, manganese 1%, nickel 0.5%, silicon 1.2%, vanadium 0.3%, molybdenum 0.4%, ferrum 95.1%；
For improving the intensity of described mould steel, first it being carried out process of refinement, then carry out pre-hard process, described pre-hard process comprises the steps:
A, quenching: mould steel is put into heating furnace and is heated to 500 DEG C, be continuously heating to 850 DEG C after insulation 1h, then be incubated 1h, then mould steel carry out Water Quenching, and is cooled to 70 DEG C in quenching liquid；
B, tempering: be heated to 180 DEG C in the mould steel after quenching is placed into heating furnace, be incubated 0.5h, come out of the stove after furnace cooling.
Wherein, the programming rate of described heating furnace is 100 DEG C/h.
Embodiment two:
A kind of corrosion resistance high-strength die steel, the quality proportioning shared by it chemical composition included and each composition is: carbon 0.6%, chromium 1.5%, manganese 0.8%, nickel 0.6%, silicon 1.8%, vanadium 0.2%, molybdenum 0.2%, ferrum 94.3%；
For improving the intensity of described mould steel, first it being carried out process of refinement, then carry out pre-hard process, described pre-hard process comprises the steps:
A, quenching: mould steel is put into heating furnace and is heated to 550 DEG C, be continuously heating to 860 DEG C after insulation 1.5h, then be incubated 1.2h, then mould steel carry out Water Quenching, and is cooled to 80 DEG C in quenching liquid；
B, tempering: be heated to 190 DEG C in the mould steel after quenching is placed into heating furnace, be incubated 0.5h, come out of the stove after furnace cooling.
Wherein, the programming rate of described heating furnace is 110 DEG C/h.
Embodiment three:
A kind of corrosion resistance high-strength die steel, the quality proportioning shared by it chemical composition included and each composition is: carbon 0.8%, chromium 1.2%, manganese 1.2%, nickel 0.3%, silicon 1.2%, vanadium 0.1%, molybdenum 0.2%, ferrum 95%；
For improving the intensity of described mould steel, first it being carried out process of refinement, then carry out pre-hard process, described pre-hard process comprises the steps:
A, quenching: mould steel is put into heating furnace and is heated to 600 DEG C, be continuously heating to 880 DEG C after insulation 2h, then be incubated 1.5h, then mould steel carry out oil quenching process, and is cooled to 90 DEG C in quenching liquid；
B, tempering: be heated to 200 DEG C in the mould steel after quenching is placed into heating furnace, be incubated 1h, come out of the stove after furnace cooling.
Wherein, the programming rate of described heating furnace is 120 DEG C/h.
Present invention is disclosed a kind of corrosion resistance high-strength die steel, by adjusting composition and the proportioning of chemical element contained by it so that it is there is good corrosion resistance, simultaneously by improving pre-hard process technique, it is effectively improved the intensity of mould steel, and reduces pre-hard processing cost.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (4)
1. a corrosion resistance high-strength die steel, including: mould steel and the pre-hard process technique that strengthens described mould steel intensity, it is characterized in that, quality proportioning shared by chemical composition that described mould steel includes and each composition is: carbon 0.5%-0.8%, chromium 1.2%-1.5%, manganese 0.8%-1.2%, nickel 0.3%-0.6%, silicon 1.2%-1.8%, vanadium 0.1%-0.3%, molybdenum 0.2%-0.4%, remaining is ferrum；
Described pre-hard process technique comprises the steps:
A, quenching: mould steel is put into heating furnace and is heated to 500-600 DEG C, be continuously heating to 850-880 DEG C after insulation 1-2h, then be incubated 1-1.5h, then mould steel carry out Quenching Treatment, and is cooled to 70-90 DEG C in quenching liquid；
B, tempering: be heated to 180-200 DEG C in the mould steel after quenching is placed into heating furnace, be incubated 0.5-1h, come out of the stove after furnace cooling.
Corrosion resistance high-strength die steel the most according to claim 1, the programming rate of described heating furnace is 100-120 DEG C/h.
Corrosion resistance high-strength die steel the most according to claim 1, described Quenching Treatment uses shrend or oil quenching mode.
Corrosion resistance high-strength die steel the most according to claim 1, described mould steel also needs to carry out process of refinement before pre-hard process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610214720.7A CN105734440A (en) | 2016-04-08 | 2016-04-08 | Corrosion-resistant high-strength die steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610214720.7A CN105734440A (en) | 2016-04-08 | 2016-04-08 | Corrosion-resistant high-strength die steel |
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| CN105734440A true CN105734440A (en) | 2016-07-06 |
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| CN201610214720.7A Pending CN105734440A (en) | 2016-04-08 | 2016-04-08 | Corrosion-resistant high-strength die steel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107114A (en) * | 1987-10-22 | 1988-05-18 | 华中工学院 | High strength and tenacity, low-alloy cold-forming die steel |
| JP2008056982A (en) * | 2006-08-30 | 2008-03-13 | Daido Steel Co Ltd | Die steel having excellent thermal fatigue property |
| CN102776450A (en) * | 2011-05-10 | 2012-11-14 | 中国科学院金属研究所 | Quenching heat treatment process for hot work die steel with low heat resistance |
| CN103774059A (en) * | 2014-01-13 | 2014-05-07 | 胡财基 | Pre-hardening plastic die steel |
| CN104451442A (en) * | 2014-11-17 | 2015-03-25 | 无锡市百顺机械厂 | Process for preparing die steel |
-
2016
- 2016-04-08 CN CN201610214720.7A patent/CN105734440A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107114A (en) * | 1987-10-22 | 1988-05-18 | 华中工学院 | High strength and tenacity, low-alloy cold-forming die steel |
| JP2008056982A (en) * | 2006-08-30 | 2008-03-13 | Daido Steel Co Ltd | Die steel having excellent thermal fatigue property |
| CN102776450A (en) * | 2011-05-10 | 2012-11-14 | 中国科学院金属研究所 | Quenching heat treatment process for hot work die steel with low heat resistance |
| CN103774059A (en) * | 2014-01-13 | 2014-05-07 | 胡财基 | Pre-hardening plastic die steel |
| CN104451442A (en) * | 2014-11-17 | 2015-03-25 | 无锡市百顺机械厂 | Process for preparing die steel |
Non-Patent Citations (1)
| Title |
|---|
| 钟翔山: "《冲模及冲压技术实用手册》", 31 January 2015, 金盾出版社 * |
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