CN105586470A - Manufacturing process for mold made of alloy steel Crl2MolVI - Google Patents
Manufacturing process for mold made of alloy steel Crl2MolVI Download PDFInfo
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- CN105586470A CN105586470A CN201410572443.8A CN201410572443A CN105586470A CN 105586470 A CN105586470 A CN 105586470A CN 201410572443 A CN201410572443 A CN 201410572443A CN 105586470 A CN105586470 A CN 105586470A
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Abstract
The invention discloses a manufacturing process for a mold made of alloy steel Crl2MolVI. The manufacturing process comprises heat treatment and nitriding treatment. The heat treatment process of the manufacturing process comprises the steps of heating in vacuum, oil quenching and tempering, and finally nitriding treatment is conducted, so that the toughness of the mold is enhanced, the deformation resistance and the fracture resistance of the mold are improved, and the abrasion resistance of the surface of the mold is improved; in addition, the capacity of fatigue resistance, non engagement and the like is improved, and the service life is also prolonged. The manufacturing process for the mold made of the alloy steel Crl2MolVI has the main characteristics that the hardness of the mold is 63 HRC and reaches the best, the oil quenching and tempering temperature is more than 1100 DEG C, and a tempering curve appears a secondary hardening peak.
Description
Technical field
The present invention relates to a kind of mold production process taking steel alloy Crl2MolVI as material.
Background technology
Modern Mold industrial expansion, depends on the research and development of high-quality mold materials to a great extent, and mould standard, advanced design and manufacturing technology, special machine tool, and productive technology management is also very important link. 21 century die industry essential characteristic, putting it briefly is exactly integrated, networking, intellectuality and flexibility. Its objective of the struggle is to enhance productivity, and improves production quality, and shortens Design of Dies and manufacturing cycle, improves die life, reduces production costs, and improves to greatest extent market adaptability to changes, meets user's needs. The main development direction of Zhe Yeshi China Modern Mold industry. Modern Mold is different from traditional moulds, not only shape is various for it, complex structure, and higher to material and technical requirement, use traditional mould making method to be difficult to adapt to, must, by the development of advanced science and technology, adopt modernization manufacturing technology, just can reach technology and quality requirement, could adapt to market demand.
Steel alloy Crl2MolVI mould is bearing the effect of the multiple mechanical forces such as tension and compression, bending, impact, fatigue, friction, makes mould parts generation brittle failure, caves in, wearing and tearing, interlock, the phenomenon such as chew, soften and lost efficacy. Traditional steel alloy Crl2MolVI mould is not possessing the abilities such as high resistance of deformation, fracture resistance, wear-resistant, antifatigue, not interlock.
Steel alloy Crl2MolVI die feature:
1) steel alloy Crl2MolVI mould contains more alloying element as Cr, Ni, Mn, Mo etc.
2) steel alloy Crl2MolVI mould alloy element reduces the martensitic phase height of steel.
3) steel alloy Crl2MolVI mould carbon affects the main element of hardenability, its hardness, intensity, wearability on steel, has impact. Therefore to pay attention to especially the especially effect of alloy carbide of carbide, control kind, form and the distribution of carbide. Carbide has the primary carbide of the several μ m of diameter and the trickle proeutectoid carbide below diameter 0.1 μ m.
The main method that steel alloy Crl2MolVI mould strengthens malleableize is through Q-tempering, is carrying out nitriding processing. The quenching process parameters of steel alloy Crl2MolVI mould as quench austenitizing temperature or the temperature range of hardening heat deviation from the norm often have, be necessary sometimes. In other words the heat treatment process of part must be in conjunction with production actual conditions. The technological specification of tempering, depends on the heat treatment technics requirement of mould parts.
Steel alloy Crl2MolVI mould, after quenching, tempering and nitriding, can obtain high wearability, compression strength and heat endurance. Because steel alloy Crl2MolVI mould is containing high carbon and chromium, therefore contain a large amount of carbide. Steel alloy Crl2MolVI mold hot is processed when not good enough, easily forms eutectic carbide segregation, impels quenching abnormal deformation or embrittlement tendency. Under normal quenching state, generally containing 10%-12% undissolved carbide; 15%-20% retained austenite.
Summary of the invention
The object of the invention is to a kind of mold production process taking steel alloy Crl2MolVI as material.
For reaching this object, the present invention by the following technical solutions.
A mold production process taking steel alloy Crl2MolVI as material, comprises the manufacture heat treatment of steel alloy 1Crl2MolVI mould and nitriding processing. Steel alloy Crl2MolVI mould is many, hot poor containing alloying element amount, and austenitizing temperature is high, and therefore heating process should be slowly, adopts preheating or staged to heat up more. For the surface quality of protection steel alloy Crl2MolVI mould, adopt and control the advanced heating of vacuum drying oven, after 1010 DEG C of oil quenchings, hardness optimal, is 63HRC. The heat treatment of the mould taking steel alloy Crl2MolVI as material, after oil hardening, after 500-530 DEG C of tempering, hardness > 60HRC. The heat treatment of the mould taking steel alloy Crl2MolVI as material, after 1100 DEG C of oil hardening, there is post-curing peak value in tempering curve.
After oil hardening tempering, be in 50% situation in nitrogen ratios, need at 510 DEG C, carry out nitriding gas disposal. Alloy steel Crl2MolVI mould salt bath should be cleared up after processing in time.
Brief description of the drawings
The impact of Fig. 1 hardening heat alloy steel Crl2MolVI die hardness,
In tri-kinds of situations of Fig. 2, temperature affects φ 30mmCrl2MolVI die hardness,
Fig. 3 gas nitriding affects 30mm steel alloy Crl2MolVI die hardness.
Detailed description of the invention
1, φ 30mm is incubated the firmness change after 30min oil quenching taking steel alloy Crl2MolVI as material mould sample under various austenitizing, and one group of sample is through-80 DEG C of cold treatments, and another group is through-180 DEG C of subzero treatments, as depicted in figs. 1 and 2. φ 30mm, taking steel alloy Crl2MolVI as material mould sample normal quenching temperature can obtain optimal hardness 1100 DEG C of left and right, is 63HRC. If carry out cold treatment after quenching, the hardening heat that obtains maximum hardness is slightly higher.
2, after φ 30mm quenches taking steel alloy Crl2MolVI as material mould sample, temperature is all got 510 DEG C, and 2h keeps high rigidity 60HRC. Taking steel alloy Crl2MolVI as material mould sample, owing to containing the more retained austenite that has, there is certain toughness so there is high rigidity simultaneously. As shown in Figure 2, along with temperature raises, hardness declines, and after 1100 DEG C of quenchings, occurs post-curing peak value on tempering curve. From scheming, φ 30mm adopts 950-1000 DEG C of lower quenching taking steel alloy Crl2MolVI as material mould sample, can obtain again higher toughness when obtaining higher hardness.
3, φ 30mm adopts higher 1050 DEG C of hardening heats and 510 DEG C of tempering 2h taking steel alloy Crl2MolVI as material mould sample, advantage is that retained austenite has been decomposed in the time of high tempering, and mould can not cause adverse consequences because retained austenite is transformed into martensite under operating pressure subsequently. Improve the resistance to tempering of steel taking steel alloy Crl2MolVI as material mould quench hot, so can be using it as the less demanding mould of impact toughness.
4,1050 DEG C of quenchings of φ 30mm steel alloy Crl2MolVI mould, after 510 DEG C of tempering 2h, are in 50% situation in nitrogen ratios, and it is less that rear roughness variation is processed in nitriding, and gas nitriding on the impact of hardness as shown in Figure 3.
Claims (3)
1. the mold production process taking steel alloy Cr12Mo1V1 as material, is characterized in that comprising its heat treatment and nitriding processing, described heat treatment, be that mould taking steel alloy Crl2MolVI as material is in heating in vacuum, after 1010 DEG C of oil quenchings, hardness optimal, is 63HRC.
2. according to the technique of claims 1, described heat treatment, is characterized in that after the mould oil quenching taking steel alloy Crl2MolVI as material, in 180-200 DEG C of tempering, hardness > 60HRC.
3. according to the technique described in claims 1, the nitriding processing of the mold production process taking steel alloy Crl2MolVI as material, it is characterized in that die workpiece is after oil hardening tempering, is in 50% situation in nitrogen ratios, need at 550 DEG C, carry out nitriding gas disposal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410572443.8A CN105586470A (en) | 2014-10-23 | 2014-10-23 | Manufacturing process for mold made of alloy steel Crl2MolVI |
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| CN201410572443.8A CN105586470A (en) | 2014-10-23 | 2014-10-23 | Manufacturing process for mold made of alloy steel Crl2MolVI |
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| CN105586470A true CN105586470A (en) | 2016-05-18 |
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| CN201410572443.8A Pending CN105586470A (en) | 2014-10-23 | 2014-10-23 | Manufacturing process for mold made of alloy steel Crl2MolVI |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251625A (en) * | 2018-01-30 | 2018-07-06 | 富甲电子(昆山)有限公司 | A kind of anti-deformation process control method for preparing die casting |
| CN109055851A (en) * | 2018-09-14 | 2018-12-21 | 河南工钻业有限公司 | A kind of preparation process of novel extrusion fluted drill mold materials |
| CN113604765A (en) * | 2021-10-09 | 2021-11-05 | 天津市弘仁金属材料有限公司 | Steel strip hot dipping method |
| CN114150114A (en) * | 2021-11-10 | 2022-03-08 | 广东世创金属科技股份有限公司 | Improved heat treatment method for welded pipe die steel |
| CN114481011A (en) * | 2021-12-31 | 2022-05-13 | 锦州捷通铁路机械股份有限公司 | Solid nitriding process for surface strengthening of hot die steel with low deformation |
-
2014
- 2014-10-23 CN CN201410572443.8A patent/CN105586470A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251625A (en) * | 2018-01-30 | 2018-07-06 | 富甲电子(昆山)有限公司 | A kind of anti-deformation process control method for preparing die casting |
| CN109055851A (en) * | 2018-09-14 | 2018-12-21 | 河南工钻业有限公司 | A kind of preparation process of novel extrusion fluted drill mold materials |
| CN113604765A (en) * | 2021-10-09 | 2021-11-05 | 天津市弘仁金属材料有限公司 | Steel strip hot dipping method |
| CN113604765B (en) * | 2021-10-09 | 2022-01-04 | 天津市弘仁金属材料有限公司 | Steel strip hot dipping method |
| CN114150114A (en) * | 2021-11-10 | 2022-03-08 | 广东世创金属科技股份有限公司 | Improved heat treatment method for welded pipe die steel |
| CN114150114B (en) * | 2021-11-10 | 2023-01-03 | 广东世创金属科技股份有限公司 | Improved heat treatment method for welded pipe die steel |
| CN114481011A (en) * | 2021-12-31 | 2022-05-13 | 锦州捷通铁路机械股份有限公司 | Solid nitriding process for surface strengthening of hot die steel with low deformation |
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Application publication date: 20160518 |