CN103962740A - 一种Cr13钢裂纹焊接方法 - Google Patents

一种Cr13钢裂纹焊接方法 Download PDF

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Publication number
CN103962740A
CN103962740A CN201410165982.XA CN201410165982A CN103962740A CN 103962740 A CN103962740 A CN 103962740A CN 201410165982 A CN201410165982 A CN 201410165982A CN 103962740 A CN103962740 A CN 103962740A
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China
Prior art keywords
welding
crackle
crack length
steel
preheating
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CN201410165982.XA
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English (en)
Inventor
刘艳琳
李广伟
张雪梅
王龙
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Harbin Aircraft Industry Group Co Ltd
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Harbin Aircraft Industry Group Co Ltd
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Priority to CN201410165982.XA priority Critical patent/CN103962740A/zh
Publication of CN103962740A publication Critical patent/CN103962740A/zh
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00Restoring or reconditioning objects
    • B23P6/04Repairing fractures or cracked metal parts or products, e.g. castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/30Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053Fe as the principal constituent
    • B23K35/308Fe as the principal constituent with Cr as next major constituent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Arc Welding In General (AREA)

Abstract

本发明是一种Cr13钢裂纹焊接方法,焊接的步骤是:去除裂纹,打坡口;预热;焊接。本发明技术与现有技术相比,由于选择了适合的焊接材料降低了焊接部位的脆性,通过采取适当的预热方法来降低母材与焊液的温度差,通过适当的焊接工艺参数降低了焊接应力产生的变形,这些措施彻底解决了Cr13模具钢开裂修复的问题。

Description

一种Cr13钢裂纹焊接方法
技术领域
本发明是一种Cr13钢裂纹焊接方法,属于金属材料的焊接技术领域。
背景技术
Cr13型钢包括Cr13,Cr12MoV,Cr13MoV1,属于高碳高铬钢,裂纹敏感性很强,有一定的焊接难度,常用于制作冷冲压模具。但是Cr13型钢在使用中常发生崩刃或断裂,目前普遍采取做焊前预热到600度,焊接后回火1-2个小时。但是因为其强烈的淬硬性,在焊接的过程中很难控制裂纹的产生,要不就是裂纹越焊越大,即使修复也只是勉强应付经不起再次工作测试。
发明内容
本发明正是针对上述现有技术中存在的不足而设计提供了一种Cr13钢裂纹焊接方法,其目的是修复Cr13钢产生的裂纹。
本发明的目的是通过以下技术方案来实现的:
该种Cr13钢裂纹焊接方法,其特征在于:该方法的步骤是:
⑴去除裂纹,将Cr13型钢零件(1)表面上的裂纹(2)铣削去除掉;
⑵打坡口,在裂纹(2)铣削处沿裂纹方向制30度坡口(3);
⑶预热,将零件置于加热炉中升温至200度,保温热透;
⑷焊接,选用铁基焊接材料进行焊接,焊接材料的化学成份及重量百分比为:Cr25~35%,Ni8~12%,Mn1~2%,余量为Fe,焊接过程中的工艺参数为:电流120A,电弧电压10~20V,当裂纹长度小于60mm时,一次焊接完成,当裂纹长度大于60mm时,以20mm为间隔进行间断焊接,分两次完成整个裂纹长度的焊接。
本发明技术方案的优点是:通过采用适合的工艺焊接方法,对Cr13型钢上的裂纹进行焊接修复,避免了因裂纹损伤所造成的Cr13型钢产品或工装的报废,降低了维修成本,缩短了维修周期。
附图说明
图1是Cr13型钢零件表面上的裂纹的示意图
图2是沿裂纹方向制30度坡口的示意图
具体实施方式
下面将结合附图和实施例对本发明技术方案作进一步地详述:
参见附图1~2所示,该种Cr13钢裂纹焊接方法,其特征在于:该方法的步骤是:
⑴去除裂纹,将Cr13型钢零件1表面上的裂纹2铣削去除掉;
⑵打坡口,在裂纹2铣削处沿裂纹方向制30度坡口3;
⑶预热,将零件置于加热炉中升温至200度,保温热透;
⑷焊接,选用铁基焊接材料进行焊接,焊接材料的化学成份及重量百分比为:Cr25~35%,Ni8~12%,Mn1~2%,余量为Fe,焊接过程中的工艺参数为:电流120A,电弧电压10~20V,当裂纹长度小于60mm时,一次焊接完成,当裂纹长度大于60mm时,以20mm为间隔进行间断焊接,分两次完成整个裂纹长度的焊接。
本发明技术与现有技术相比,由于选择了适合的焊接材料降低了焊接部位的脆性,通过采取适当的预热方法来降低母材与焊液的温度差,通过适当的焊接工艺参数降低了焊接应力产生的变形,这些措施彻底解决了Cr13模具钢开裂修复的问题。

Claims (1)

1.一种Cr13钢裂纹焊接方法,其特征在于:该方法的步骤是:
⑴去除裂纹,将Cr13型钢零件(1)表面上的裂纹(2)铣削去除掉;
⑵打坡口,在裂纹(2)铣削处沿裂纹方向制30度坡口(3);
⑶预热,将零件置于加热炉中升温至200度,保温热透;
⑷焊接,选用铁基焊接材料进行焊接,焊接材料的化学成份及重量百分比为:Cr25~35%,Ni8~12%,Mn1~2%,余量为Fe,焊接过程中的工艺参数为:电流120A,电弧电压10~20V,当裂纹长度小于60mm时,一次焊接完成,当裂纹长度大于60mm时,以20mm为间隔进行间断焊接,分两次完成整个裂纹长度的焊接。
CN201410165982.XA 2014-04-23 2014-04-23 一种Cr13钢裂纹焊接方法 Pending CN103962740A (zh)

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CN201410165982.XA CN103962740A (zh) 2014-04-23 2014-04-23 一种Cr13钢裂纹焊接方法

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51109242A (ja) * 1975-03-20 1976-09-28 Hitachi Shipbuilding Eng Co Shushukuhizumikeigensuruyosetsuho
CN1410222A (zh) * 2001-09-21 2003-04-16 重庆钢铁(集团)有限责任公司 用嵌补焊接修复金属构件缺陷的方法
CN1911583A (zh) * 2006-08-23 2007-02-14 四川东风电机厂有限公司 水轮发电机转子支架裂纹补焊方法
CN101318272A (zh) * 2007-06-08 2008-12-10 江苏兴海特钢有限公司 奥氏体不锈钢用焊丝材料

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51109242A (ja) * 1975-03-20 1976-09-28 Hitachi Shipbuilding Eng Co Shushukuhizumikeigensuruyosetsuho
CN1410222A (zh) * 2001-09-21 2003-04-16 重庆钢铁(集团)有限责任公司 用嵌补焊接修复金属构件缺陷的方法
CN1911583A (zh) * 2006-08-23 2007-02-14 四川东风电机厂有限公司 水轮发电机转子支架裂纹补焊方法
CN101318272A (zh) * 2007-06-08 2008-12-10 江苏兴海特钢有限公司 奥氏体不锈钢用焊丝材料

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
付俊等: "330MW汽轮机高压外缸缸体裂纹焊接修复和变形控制", 《东方汽轮机》 *
毛建中: "Cr13系列不锈钢的焊接", 《焊接技术》 *

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Application publication date: 20140806