CN103962740A - 一种Cr13钢裂纹焊接方法 - Google Patents
一种Cr13钢裂纹焊接方法 Download PDFInfo
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
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- 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
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。
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Citations (4)
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 |
-
2014
- 2014-04-23 CN CN201410165982.XA patent/CN103962740A/zh active Pending
Patent Citations (4)
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)
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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