CN112853068A - 一种超细规格油淬火-回火弹簧钢丝制备工艺 - Google Patents
一种超细规格油淬火-回火弹簧钢丝制备工艺 Download PDFInfo
- Publication number
- CN112853068A CN112853068A CN202011634541.1A CN202011634541A CN112853068A CN 112853068 A CN112853068 A CN 112853068A CN 202011634541 A CN202011634541 A CN 202011634541A CN 112853068 A CN112853068 A CN 112853068A
- Authority
- CN
- China
- Prior art keywords
- phosphating
- pickling
- steel wire
- spring steel
- temperature
- 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
- 229910000639 Spring steel Inorganic materials 0.000 title claims abstract description 22
- 238000005496 tempering Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000005554 pickling Methods 0.000 claims abstract description 44
- 239000002253 acid Substances 0.000 claims abstract description 27
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- MFXMOUUKFMDYLM-UHFFFAOYSA-L zinc;dihydrogen phosphate Chemical compound [Zn+2].OP(O)([O-])=O.OP(O)([O-])=O MFXMOUUKFMDYLM-UHFFFAOYSA-L 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 5
- 102100029674 E3 ubiquitin-protein ligase TRIM9 Human genes 0.000 description 3
- 101000795280 Homo sapiens E3 ubiquitin-protein ligase TRIM9 Proteins 0.000 description 3
- 101000588012 Homo sapiens SREBP regulating gene protein Proteins 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- 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
-
- 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
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Metal Extraction Processes (AREA)
Abstract
本发明提供了一种超细规格油淬火‑回火弹簧钢丝制备工艺，其包括以下步骤：将直径为5‑6mm的热轧线材进行一次酸洗磷化处理；通过若干道拉拔直至直径为2‑3mm；退火处理；二次酸洗磷化处理；拉拔至0.5‑1.0mm；油淬火‑回火处理，收线。该制备工艺可用于生产高精密度、高强度、高抗疲劳性的低衰减超细规格弹簧钢丝。
Description
技术领域
本发明涉及了一种钢丝制备工艺，具体的说，涉及了一种超细规格油淬火-回火弹簧钢丝制备工艺。
背景技术
弹簧钢丝是用于做弹簧(SPRING)或钢丝型件(WIREFORM)的一种钢丝。随着汽车行业对发动机设计的要求进一步的提高，主要表现在对发动机的燃油效率，排放的要求越来越高，发动机的体积和重量的越来越小，同时对于汽车安全性的要求也越来越高，气门弹簧材料技术的要求是弹簧规格要更加细同时要求精密度、强度、抗疲劳性更高，且衰减更低。但是，目前我国市场上的这种超细规格弹簧钢丝主要依靠进口，因此，研发一种超细弹簧钢丝的制备工艺具有重要意义。
发明内容
本发明的目的是针对现有技术的不足，从而提供一种超细规格油淬火-回火弹簧钢丝制备工艺。
为了实现上述目的，本发明所采用的技术方案是：
一种超细规格油淬火-回火弹簧钢丝制备工艺，其包括以下步骤：
(1)将直径为5-6mm的热轧线材进行一次酸洗磷化处理；
(2)通过若干道拉拔直至直径为2-3mm；
(3)退火处理；
(4)二次酸洗磷化处理；
(5)拉拔至0.5-1.0mm；
(6)油淬火-回火处理，收线。
基于上述，所述退火处理步骤中，加热至750-800℃保温1-2h，以10±3℃/h降温至500℃，以100±3℃/h降温至100℃，自然冷却。
基于上述，所述一次酸洗磷化处理步骤中，酸洗液为质量分数为15％-25％的稀硫酸或稀盐酸，酸洗温度为50-60℃，酸洗时间为15-30min；磷化液为15-20％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为10-15min。
基于上述，所述二次酸洗磷化处理步骤中，酸洗液为质量分数为15％-25％的稀硫酸或稀盐酸，酸洗温度为50-60℃，酸洗时间为3-6min；磷化液为15-20％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为20-30min。
基于上述，所述油淬火-回火处理步骤中，加热至850-900℃，保温5-10s，采用油淬火介质快速冷却到150-200℃，再加热至450～500℃，保温10-15s，快速冷却至50-100℃。
基于上述，采用直进式干粉拉丝设备进行拉拔。
本发明相对现有技术具有突出的实质性特点和显著进步，具体的说，本发明供一种超细规格油淬火-回火弹簧钢丝制备工艺，通过两酸洗磷化、退火、油淬火-回火结合两次拉拔保证钢丝抗拉强度的通条性一致、钢丝组织一致，并且使钢丝肌体的组织细化到最佳状态，从而大大降低用弹簧钢丝的力值衰减。首先进行酸洗磷化处理去除热轧线材表面的氧化皮并磷化形成涂层，以便进行拉拔形成半成品；然后进行退火处理，降低硬度，通过二次酸洗磷化处理形成涂层，再拉拔至0.5-1.0mm，最后进行油淬火-回火处理，提高钢丝的韧性，另外，拉拔工序采用直进式干粉拉丝设备，相对于生产冷拉丝和琴钢丝使用的水箱式拉丝设备，能有效的保护钢丝表面不受损伤，从而提高钢丝的抗疲劳性能。
具体实施方式
下面通过具体实施方式，对本发明的技术方案做进一步的详细描述。
实施例1
一种超细规格油淬火-回火弹簧钢丝制备工艺，其包括以下步骤：
(1)将直径为5.5mm的热轧线材进行一次酸洗磷化处理；
(2)通过若干道拉拔直至直径为2.5mm；
(3)退火处理；
(4)二次酸洗磷化处理；
(5)拉拔至0.5mm；
(6)油淬火-回火处理，收线。
具体的，热轧线材采用55SiCr弹簧钢热轧线材，所述退火处理步骤中，加热至760℃保温1h，以10±3℃/h降温至500℃，以100±3℃/h降温至100℃，自然冷却。所述一次酸洗磷化处理步骤中，酸洗液为质量分数为15％的稀硫酸，酸洗温度为50-60℃，酸洗时间为15min；磷化液为17％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为10min。所述二次酸洗磷化处理步骤中，酸洗液为质量分数为15％的稀硫酸，酸洗温度为50-60℃，酸洗时间为5min；磷化液为17％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为30min。所述油淬火-回火处理步骤中，加热至870℃，保温8s，采用油淬火介质快速冷却到200℃以下，再加热至450℃，保温10s，快速冷却至100℃以下。拉拔工序采用直进式干粉拉丝设备进行拉拔。
本实施例制得弹簧钢丝的抗拉强度为2110MPA，疲劳寿命为1.1×108次。
实施例2
一种超细规格油淬火-回火弹簧钢丝制备工艺，其包括以下步骤：
(1)将直径为5.5mm的热轧线材进行一次酸洗磷化处理；
(2)通过若干道拉拔直至直径为2mm；
(3)退火处理；
(4)二次酸洗磷化处理；
(5)拉拔至1.0mm；
(6)油淬火-回火处理，收线。
具体的，热轧线材采用55SiCr弹簧钢热轧线材，所述退火处理步骤中，加热至750℃保温2h，以10±3℃/h降温至500℃，以100±3℃/h降温至100℃，自然冷却。所述一次酸洗磷化处理步骤中，酸洗液为质量分数为25％的稀盐酸，酸洗温度为50-60℃，酸洗时间为30min；磷化液为20％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为15min。所述二次酸洗磷化处理步骤中，酸洗液为质量分数为25％的稀盐酸，酸洗温度为50-60℃，酸洗时间为3min；磷化液为20％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为20min。所述油淬火-回火处理步骤中，加热至900℃，保温50s，采用油淬火介质快速冷却到150℃，再加热至450℃，保温10s，快速冷却至100℃。拉拔工序采用直进式干粉拉丝设备进行拉拔。
本实施例制得弹簧钢丝的抗拉强度为2160MPA，疲劳寿命为1.2×108次。
最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制；尽管参照较佳实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者对部分技术特征进行等同替换；而不脱离本发明技术方案的精神，其均应涵盖在本发明请求保护的技术方案范围当中。
Claims (6)
1.一种超细规格油淬火-回火弹簧钢丝制备工艺，其包括以下步骤：
(1)将直径为5-6mm的热轧线材进行一次酸洗磷化处理；
(2)通过若干道拉拔直至直径为2-3mm；
(3)退火处理；
(4)二次酸洗磷化处理；
(5)拉拔至0.5-1.0mm；
(6)油淬火-回火处理，收线。
2.根据权利要求1所述的超细规格油淬火-回火弹簧钢丝制备工艺，其特征在于：所述退火处理步骤中，加热至750-800℃保温1-2h，以10±3℃/h降温至500℃，以100±3℃/h降温至100℃，自然冷却。
3.根据权利要求1或2所述的超细规格油淬火-回火弹簧钢丝制备工艺，其特征在于：所述一次酸洗磷化处理步骤中，酸洗液为质量分数为15％-25％的稀硫酸或稀盐酸，酸洗温度为50-60℃，酸洗时间为15-30min；磷化液为15-20％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为10-15min。
4.根据权利要求3所述的超细规格油淬火-回火弹簧钢丝制备工艺，其特征在于：所述二次酸洗磷化处理步骤中，酸洗液为质量分数为15％-25％的稀硫酸或稀盐酸，酸洗温度为50-60℃，酸洗时间为3-6min；磷化液为15-20％的磷酸二氢锌溶液，磷化温度为70-80℃，磷化时间为20-30min。
5.根据权利要求4所述的超细规格油淬火-回火弹簧钢丝制备工艺，其特征在于：所述油淬火-回火处理步骤中，加热至850-900℃，保温5-10s，采用油淬火介质快速冷却到150-200℃，再加热至450～500℃，保温10-15s，快速冷却至50-100℃。
6.根据权利要求1所述的超细规格油淬火-回火弹簧钢丝制备工艺，其特征在于：采用直进式干粉拉丝设备进行拉拔。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634541.1A CN112853068A (zh) | 2020-12-31 | 2020-12-31 | 一种超细规格油淬火-回火弹簧钢丝制备工艺 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634541.1A CN112853068A (zh) | 2020-12-31 | 2020-12-31 | 一种超细规格油淬火-回火弹簧钢丝制备工艺 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112853068A true CN112853068A (zh) | 2021-05-28 |
Family
ID=76000126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011634541.1A Pending CN112853068A (zh) | 2020-12-31 | 2020-12-31 | 一种超细规格油淬火-回火弹簧钢丝制备工艺 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112853068A (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309122A (zh) * | 2021-11-22 | 2022-04-12 | 铃木加普腾钢丝（苏州）有限公司 | 汽车离合器不规则多边形油淬火钢丝成型工艺 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080111688A (ko) * | 2007-06-19 | 2008-12-24 | 주식회사 포스코 | 피로수명이 우수한 고강도, 고인성 스프링, 상기 스프링용강선재와 강선 및 상기 강선과 스프링의 제조방법 |
| WO2014157142A1 (ja) * | 2013-03-25 | 2014-10-02 | 株式会社神戸製鋼所 | 伸線加工性、および伸線加工後の曲げ加工性に優れた高強度ばね用鋼線材、およびその製造方法、並びに高強度ばね、およびその製造方法 |
| CN105382153A (zh) * | 2015-11-26 | 2016-03-09 | 常州机电职业技术学院 | 气门弹簧生产工艺 |
| CN106906464A (zh) * | 2017-03-27 | 2017-06-30 | 启东市海纳特钢有限公司 | 一种小线径弹簧钢丝的生产工艺 |
| CN107699888A (zh) * | 2017-10-18 | 2018-02-16 | 江西华立金属制品有限公司 | 一种环保型弹簧钢丝的加工方法 |
| CN108160741A (zh) * | 2017-12-28 | 2018-06-15 | 东莞科力线材技术有限公司 | 压铆件用合金钢线材的制备方法、压铆件及其调质工艺 |
-
2020
- 2020-12-31 CN CN202011634541.1A patent/CN112853068A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080111688A (ko) * | 2007-06-19 | 2008-12-24 | 주식회사 포스코 | 피로수명이 우수한 고강도, 고인성 스프링, 상기 스프링용강선재와 강선 및 상기 강선과 스프링의 제조방법 |
| WO2014157142A1 (ja) * | 2013-03-25 | 2014-10-02 | 株式会社神戸製鋼所 | 伸線加工性、および伸線加工後の曲げ加工性に優れた高強度ばね用鋼線材、およびその製造方法、並びに高強度ばね、およびその製造方法 |
| CN105382153A (zh) * | 2015-11-26 | 2016-03-09 | 常州机电职业技术学院 | 气门弹簧生产工艺 |
| CN106906464A (zh) * | 2017-03-27 | 2017-06-30 | 启东市海纳特钢有限公司 | 一种小线径弹簧钢丝的生产工艺 |
| CN107699888A (zh) * | 2017-10-18 | 2018-02-16 | 江西华立金属制品有限公司 | 一种环保型弹簧钢丝的加工方法 |
| CN108160741A (zh) * | 2017-12-28 | 2018-06-15 | 东莞科力线材技术有限公司 | 压铆件用合金钢线材的制备方法、压铆件及其调质工艺 |
Non-Patent Citations (2)
| Title |
|---|
| 中国冶金百科全书总编辑委员会《冶金建设》卷编辑委员会: "《中国冶金百科全书冶金建设 上》", 31 January 1999 * |
| 张东文: "《弹簧设计与制造工艺新技术及质量监控实用手册 第1卷》", 31 August 2003 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309122A (zh) * | 2021-11-22 | 2022-04-12 | 铃木加普腾钢丝（苏州）有限公司 | 汽车离合器不规则多边形油淬火钢丝成型工艺 |
| CN114309122B (zh) * | 2021-11-22 | 2024-01-23 | 铃木加普腾钢丝（苏州）有限公司 | 汽车离合器不规则多边形油淬火钢丝成型工艺 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110153222B (zh) | 一种钢丝的高速拉拔工艺 | |
| CN102719643B (zh) | 一种钢丝绳用高碳碳素钢盘条热处理工艺 | |
| CN112853068A (zh) | 一种超细规格油淬火-回火弹簧钢丝制备工艺 | |
| JP2011526206A (ja) | ヘリコイド絞り圧延機を利用したコイルバネの製造方法 | |
| WO2023036206A1 (zh) | 一种氢燃料电池钛金属双极板基材的制备方法 | |
| CN105296849B (zh) | 一种大型发电机转子用无取向电工钢及生产方法 | |
| CN112853067A (zh) | 一种异形截面油淬火-回火弹簧钢丝制备工艺 | |
| CN111996353A (zh) | 一种高效电工钢的生产方法 | |
| CN115341076B (zh) | 一种弹簧钢及其球化退火方法 | |
| WO2023035444A1 (zh) | 一种不锈钢丝及其制备方法和不锈钢弹簧 | |
| CN111842486A (zh) | 一种高温合金gh4169的冷轧工艺 | |
| CN114058797A (zh) | 一种节镍奥氏体不锈钢连续线退火酸洗的生产方法 | |
| CN113416834A (zh) | 一种钢丝热处理淬火工艺 | |
| CN108300892A (zh) | 一种用于线簧插孔的细直径铍青铜线材及其制备方法 | |
| JPH1053813A (ja) | 非調質高張力ボルトの製造方法 | |
| CN102409247A (zh) | 一种多功能天车加料小车盘簧生产工艺 | |
| CN115216657B (zh) | 一种高性能镍铬合金电阻丝的生产工艺 | |
| CN115058648B (zh) | 一种1000MPa级冷轧热处理钢带及其制备方法 | |
| CN104372354A (zh) | 中高碳细规格制绳用钢丝在线热处理酸洗磷化工艺 | |
| CN115449806B (zh) | 一种提高弹簧钢显微组织均匀性的生产工艺 | |
| CN114410935B (zh) | 一种低温冲击韧性良好的p265gh钢板的生产方法 | |
| CN114672621B (zh) | 改善1Cr11MoV压延辊网状组织的热处理工艺 | |
| CN108950379A (zh) | 一种低应力高寿命的琴钢丝及制备方法 | |
| CN112962020B (zh) | 一种架空导线用合金材料及其制备方法 | |
| CN114164375A (zh) | 一种低硬度无取向硅钢冷轧钢带及其制造方法 |
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: 20210528 |