CN102943216A - Mold steel used for hot-forging mold-pressing casting mold - Google Patents
Mold steel used for hot-forging mold-pressing casting mold Download PDFInfo
- Publication number
- CN102943216A CN102943216A CN2012104062385A CN201210406238A CN102943216A CN 102943216 A CN102943216 A CN 102943216A CN 2012104062385 A CN2012104062385 A CN 2012104062385A CN 201210406238 A CN201210406238 A CN 201210406238A CN 102943216 A CN102943216 A CN 102943216A
- Authority
- CN
- China
- Prior art keywords
- hour
- mold
- temperature
- steel
- 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.)
- Granted
Links
Landscapes
- Forging (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mold steel used for a hot-forging mold-pressing casting mold. The matrix of the mold steel is composed of the following components of, by mass, 0.23-0.35% of C, 1.4-2.0% of Mn, 0.8-1.5% of Si, 0.11-0.15% of V, 0.10-0.19% of Ti, 0.8-2.0% of Cr, 0.4-1.5% of Ni, 0.21-0.8% of W, 0.02-0.06% of Nb, 0.30%-1.20% of Cu, equal to or less than 0.034% of P, equal to or less than 0.050% of S, and the balance being Fe and inevitable inclusion impurities. A casting process comprises the steps of heating the mold steel containing the above components at a temperature of 650-760 DEG C, keeping the temperature for 5-6 hours, furnace cooling to a temperature of 280-320 DEG C, keeping the temperature for 3-5 hours, heating to a temperature of 650-690 DEG C, keeping the temperature for 32 hours, cooling to a temperature of 400 DEG C at a speed of 43 DEG C/hour, and then cooling to a normal temperature at a speed of 20 DEG C/hour. The mold steel has excellent toughness and cutability, thereby prolonging the life of a tool. At the same time, the mold steel can maintain regular performance and has excellent polishability and wear resistance.
Description
Technical field
The present invention relates to a kind of die steel, specifically belong to hot-forging die transfer mold die steel.
Background technology
The die steel that is used for producing mould for plastics need to have following characteristic:
(1) minute surface finishability (mirror finish workability) is good, is difficult for occuring pin hole and small pit;
(2) polishing processibility (satinizing workability) is good;
(3) anticorrosive good with getting rusty property;
(4) intensity, wear resistance and toughness are good;
(5) machinability is good.
Usually the medium C-Mn-Cr-Mo-Fe such as example such as JIS SCM440 be steel as plastic shaping die steel, but above-mentioned requirements increased, in addition, in recent years, the reduction of producing the time of delivery is as client's important requirement appearance.Satisfy this requirement in order to reduce the procedure of processing number, usually use various steel, for example low-carbon Mn-Cr-Mo-S-Fe is steel (seeing JP-A-48-093518), contains the steel (seeing JP-A-58-067850 or JP-A-60-204868) of Cu to what above-mentioned steel (being JP-A-48-093518) added the modification steel (JP-A-52-065557) of Ni and improvement machinability without sulphur in order to improve hardenability.
Above-mentioned plastic shaping steel, be that low-carbon Mn-Cr-Mo-S-Fe is that steel and low-carbon Mn-Ni-Cr-Mo-S-Fe are steel, exist the problem that can not obtain satisfied die life, because when with this steel formation maximum length approximately during 2 meters large size mould, since sulfide segregation etc., polishability, wear resistance and toughness variation.To be steel without sulphur Mn-Cr-Cu-Fe have low softening resistance to scorching processing of quenching back to the low-carbon (LC) of JP-A-58-067850, thus when it when approximately carrying out nitriding treatment under 550 ℃, the hardness variation of steel.Low-carbon Mn-Ni-Cr-Mo of JP-A-48-093518 (W/2)-Cu-Fe is that steel are not necessarily satisfactory, and this is because can not obtain enough structural hardening effects because carbon content is low.
Mn-Cr-Mo-at the low A1 of the low-carbon and low-sulphur of JP-A-03-115523 and hypoxemia is in the steel, because the lower hardness of base material has been improved machinability in HRC30, although so improved the minute surface finishability by the appearance that suppresses nonmetal impurities, this material has low hardness and not satisfied polishability and wear resistance.Low-carbon Mn-Cr-Mo of JP-A-07-062491 (W)-V-Cu-Fe steel or low-carbon Mn-Ni-Cr-Mo (W)-V-Cu-Fe steel are guaranteed: namely use this steel to form large-sized mould, also can satisfy the energy plastic shaping above-mentioned requirements of mould, because Cr, Mo (W/2), Cu and V, because of enough precipitation-hardenings, these steel have the machinability of the excellence of high intensity.But when using engineering plastic materials widely, polishability and wear resistance are not necessarily satisfactory.
Summary of the invention
A kind of hot-forging die transfer mold die steel is provided on the purpose of the present invention, and it has excellent toughness and machinability, thereby can prolong the life-span of instrument, keeps simultaneously conventional performance, has excellent polishability and wear resistance.
Technical scheme of the present invention is as follows:
Hot-forging die transfer mold die steel, the die steel matrix is comprised of the component of following mass percent: C 0.23-0.35%, Mn 1.4-2.0%, Si 0.8-1.5%, V 0.11-0.15%, Ti 0.10-0.19%, Cr 0.8-2.0%, Ni 0.4-1.5%, W 0.21-0.8%, Nb 0.02-0.06%, Cu 0.30%-1.20%, P≤0.034%, S≤0.050%, surplus are Fe and inevitably are mingled with matter; The die steel that will contain said components is heated to 650-760 ℃, is incubated 5-6 hour, and stove is chilled to 280-320 ℃, is incubated 3-5 hour, reheats to 650-690 ℃, is incubated 32 hours, is cooled to 400 ℃ with 43 ℃/hour, with 20 ℃/hour, is cooled to normal temperature again.About-190 ℃, processed 5-6 hour in the lower liquid nitrogen; Rise to room temperature, preserve after 24-36 hour, reheat to 240-260 ℃, be incubated 2-3 hour, air cooling.
The present invention has excellent toughness and machinability, thereby can prolong the life-span of instrument, keeps simultaneously conventional performance, has excellent polishability and wear resistance.
Embodiment
Hot-forging die transfer mold die steel, the die steel matrix is comprised of the component of following mass percent: C 0.23-0.35%, Mn 1.4-2.0%, Si 0.8-1.5%, V 0.11-0.15%, Ti 0.10-0.19%, Cr 0.8-2.0%, Ni 0.4-1.5%, W 0.21-0.8%, Nb 0.02-0.06%, Cu 0.30%-1.20%, P≤0.034%, S≤0.050%, surplus are Fe and inevitably are mingled with matter; The die steel that will contain said components is heated to 650-760 ℃, be incubated 5-6 hour, stove is chilled to 280-320 ℃, be incubated 3-5 hour, reheat to 650-690 ℃, be incubated 32 hours, be cooled to 400 ℃ with 43 ℃/hour, with 20 ℃/hour, be cooled to normal temperature again, about-190 ℃, processed 5-6 hour in the lower liquid nitrogen; Rise to room temperature, preserve after 24-36 hour, reheat to 240-260 ℃, be incubated 2-3 hour, air cooling.
The metal construction of die steel matrix has the primary phase of lower bainite.Of the present invention
PowerPerformance detection data is as follows:
Performance index are as follows after testing:
Hardness HRC:66-67
Bending strength: 2400-2800Mpa
Impelling strength: 60-74J/cm2
Ultimate compression strength: 2100-2300 Mpa
Wear resistance: reach D2.
Claims (2)
1. hot-forging die transfer mold die steel is characterized in that, the die steel matrix is comprised of the component of following mass percent: C 0.23-0.35%, Mn 1.4-2.0%, Si 0.8-1.5%, V 0.11-0.15%, Ti 0.10-0.19%, Cr 0.8-2.0%, Ni 0.4-1.5%, W 0.21-0.8%, Nb 0.02-0.06%, Cu 0.30%-1.20%, P≤0.034%, S≤0.050%, surplus is Fe and inevitably is mingled with matter; The die steel that will contain said components is heated to 650-760 ℃, is incubated 5-6 hour, and stove is chilled to 280-320 ℃, is incubated 3-5 hour, reheats to 650-690 ℃, is incubated 32 hours, is cooled to 400 ℃ with 43 ℃/hour, with 20 ℃/hour, is cooled to normal temperature again; In-190 ℃ of lower liquid nitrogen, processed 5-6 hour; Rise to room temperature, preserve after 24-36 hour, reheat to 240-260 ℃, be incubated 2-3 hour, air cooling.
2. described hot-forging die transfer mold die steel according to claim 1 is characterized in that, the metal construction of described die steel matrix has the primary phase of lower bainite, and described die steel has the hardness of HRC66~67.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210406238.5A CN102943216B (en) | 2012-10-23 | 2012-10-23 | Mold steel used for hot-forging mold-pressing casting mold |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210406238.5A CN102943216B (en) | 2012-10-23 | 2012-10-23 | Mold steel used for hot-forging mold-pressing casting mold |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102943216A true CN102943216A (en) | 2013-02-27 |
CN102943216B CN102943216B (en) | 2015-04-29 |
Family
ID=47726198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210406238.5A Expired - Fee Related CN102943216B (en) | 2012-10-23 | 2012-10-23 | Mold steel used for hot-forging mold-pressing casting mold |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102943216B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110195186A (en) * | 2019-05-14 | 2019-09-03 | 鞍钢股份有限公司 | Ultra-thick hot-rolled high-alloy hot-work die steel and preparation method thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5270124A (en) * | 1989-06-30 | 1993-12-14 | The Broken Hill Proprietary Co., Ltd. | Composite roll |
CN1955328A (en) * | 2005-10-27 | 2007-05-02 | 日立金属株式会社 | Die steel |
CN101070580A (en) * | 2007-03-05 | 2007-11-14 | 大连海事大学 | Alloy tool steel in multi-type super-fine carbonates |
CN101096743A (en) * | 2006-06-27 | 2008-01-02 | 宝山钢铁股份有限公司 | Super-thick non-hardening plastic mold steel and method for manufacturing the same |
CN101230442A (en) * | 2007-01-22 | 2008-07-30 | 宝山钢铁股份有限公司 | Low-alloy untempered steel for plastic mould frame steel and method for manufacturing same |
CN101880829A (en) * | 2010-07-09 | 2010-11-10 | 中国第一汽车集团公司 | Novel magnesium alloy hot die steel |
CN101956136A (en) * | 2010-11-01 | 2011-01-26 | 机械科学研究总院先进制造技术研究中心 | Martensite-granular bainite plastic die steel and manufacturing method thereof |
-
2012
- 2012-10-23 CN CN201210406238.5A patent/CN102943216B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5270124A (en) * | 1989-06-30 | 1993-12-14 | The Broken Hill Proprietary Co., Ltd. | Composite roll |
CN1955328A (en) * | 2005-10-27 | 2007-05-02 | 日立金属株式会社 | Die steel |
CN101096743A (en) * | 2006-06-27 | 2008-01-02 | 宝山钢铁股份有限公司 | Super-thick non-hardening plastic mold steel and method for manufacturing the same |
CN101230442A (en) * | 2007-01-22 | 2008-07-30 | 宝山钢铁股份有限公司 | Low-alloy untempered steel for plastic mould frame steel and method for manufacturing same |
CN101070580A (en) * | 2007-03-05 | 2007-11-14 | 大连海事大学 | Alloy tool steel in multi-type super-fine carbonates |
CN101880829A (en) * | 2010-07-09 | 2010-11-10 | 中国第一汽车集团公司 | Novel magnesium alloy hot die steel |
CN101956136A (en) * | 2010-11-01 | 2011-01-26 | 机械科学研究总院先进制造技术研究中心 | Martensite-granular bainite plastic die steel and manufacturing method thereof |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110195186A (en) * | 2019-05-14 | 2019-09-03 | 鞍钢股份有限公司 | Ultra-thick hot-rolled high-alloy hot-work die steel and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN102943216B (en) | 2015-04-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101487102B (en) | Non-molybdenum non-nickel middle chrome wear resistant steel casting and heat treatment method thereof | |
CN102953013B (en) | The preparation technology of hot-forging die transfer mold die steel | |
CN102936703A (en) | Cold heading die mold steel processing method | |
CN101603149A (en) | Low-alloy high-speed steel | |
CN102936699A (en) | Mold steel used in cold punching die | |
JP2011510175A (en) | High alloy cold die steel | |
CN114231842B (en) | 3D printing stainless steel material and heat treatment method after printing | |
CN104451437A (en) | Method for preparing large high-performance cold roll | |
CN102899469B (en) | Heat-treatment method of high-chromium wear-resistant white cast iron Cr28 | |
CN101956136B (en) | Martensite-granular bainite plastic die steel and manufacturing method thereof | |
CN104894479A (en) | Steel for mode | |
CN103993233A (en) | Novel high-service life die-casting mold steel and process method for manufacturing aluminum-magnesium die-casting mold | |
CN109022700A (en) | The heat treatment method of the high Corrosion Resistant Stainless Steel for Plastic Mould of high nitrogen | |
CN103572013B (en) | A kind of Spheroidizing Annealing method of 40Cr steel | |
CN102936704A (en) | Cold extrusion die mold steel processing method | |
CN105695700A (en) | Heat treatment process for die steel | |
CN102943216B (en) | Mold steel used for hot-forging mold-pressing casting mold | |
CN101956144A (en) | Heat treatment method for manufacturing Martensitic-ferrite plastic mould steel | |
CN102936693B (en) | Drawing die mold steel processing method | |
CN102950428B (en) | The processing method of plastic die steel steel plate | |
CN102953011B (en) | The working method of plastic die steel | |
CN107904387A (en) | A kind of Gear Shaft Heat Treatment | |
CN103060672A (en) | Preparation process for die steel | |
CN104099528B (en) | A kind of special-shaped roll and preparation method thereof | |
CN104451442A (en) | Process for preparing die steel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151023 |
|
EXPY | Termination of patent right or utility model |