CN1007220B - 耐吸潮高韧性焊条 - Google Patents

耐吸潮高韧性焊条

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Publication number
CN1007220B
CN1007220B CN 88100122 CN88100122A CN1007220B CN 1007220 B CN1007220 B CN 1007220B CN 88100122 CN88100122 CN 88100122 CN 88100122 A CN88100122 A CN 88100122A CN 1007220 B CN1007220 B CN 1007220B
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China
Prior art keywords
glass powder
welding rod
resistant high
moisture resistant
welding electrodes
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CN 88100122
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CN1031670A (zh
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陈剑虹
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GANSU POLYTECHNIC UNIV
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GANSU POLYTECHNIC UNIV
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Priority to CN 88100122 priority Critical patent/CN1007220B/zh
Publication of CN1031670A publication Critical patent/CN1031670A/zh
Publication of CN1007220B publication Critical patent/CN1007220B/zh
Expired legal-status Critical Current

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    • 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
    • B23K35/36Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/365Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

一种耐吸潮高韧性焊条,由于采用新型焊条药皮和在玻璃粉末降低了B2O3的含量,加入了具有稳弧性的TiO2制成的焊条,从而明显提高焊条耐吸潮性能和焊缝的韧性。

Description

本发明是一种耐吸潮高韧性焊条。
现有技术是由日本神户制钢所申请的专利-耐吸潮焊条(专利公告号为昭48-34295)。该专利的焊条药皮和玻璃粉末的成分分别为表1和表2中所列成分。
表1成分 CaCo3CaF2Fe-Mn Fe-Si Ni粉 Fe-Mo 金红石
%    45    19    4    13    1.5    1    7
表2成分 SiO2Na2O K2O Li2O CaO B2O3
%    43.6    19.3    19.5    3.5    3.9    9.1
将表所列成分的玻璃粉末按焊条药皮重量的2-20%加入焊条药皮中压涂成焊条。该项日本专利的缺陷在于其玻璃粉末在焙烧过程中熔解较多,稳定性差,而熔解过程本身会吸潮,这样就会在施焊过程中在焊缝中形成较多的氢原子,产生氢脆,降低了焊缝的韧性;由于该日本专利的玻璃粉末中B2O3的含量较高,在熔焊过程中使焊缝中B的分布不均匀,从而降低了焊缝的韧性。
本发明的目的是提高焊条的耐吸潮性能和提高焊缝的韧性。
本发明采用新型的焊条药皮和玻璃粉末分别为表3、表4所列成分:
表3成分    大理石    莹石    钛白粉    纯碱    硅铁    铁粉
%    35    35    3    1    2.5    8
成分    硅钙    钛铁    铝镁    锰铁    硅砂    玻璃粉末    Ni粉
%    1    7    0.8    6.5    2    5    1.3
表4成分 SiO2Na2O K2O CaO B2O3Li2O CaF2TiO2
%    30    17.3    20    2.4    6.7    4.8    6    6
如表3所示,加入本发明的焊条药皮中表4所示的玻璃粉末的比例为焊条药皮重量的5%。本发明焊条药皮中B2O3含量为6.7%,从而在焙 烧过程中和熔焊过程中使B分布均匀,防止焊缝中B的富集,提高了焊缝的韧性。本发明的玻璃粉末在加入焊条药皮中压涂成焊条后经450℃的烘干充分均匀地熔融,在焊条药皮中形成一层防潮湿覆盖膜,大大减少水分子的含量,从而显著降低施焊过程中所形成的焊缝中的氢原子浓度,防止焊缝产生氢脆,提高了焊缝的韧性。本发明具体的制备焊条的方法为:首先将表4所列玻璃粉末的粉料混合后经900℃焙烧,冷却后研细加入焊条药皮中压涂成焊条;在450℃对该焊条进行第二次烘干,保证玻璃粉末能充分均匀地熔融。在本发明的玻璃粉末中加入6%的TiO2可明显地提高焊接电弧的稳定性。
本发明的玻璃粉末具有良好的耐吸潮性能。称取一定量的玻璃粉末放入开水中煮2小时,实验结果是玻璃粉末在煮前重量为62.43371克,煮后重量为62.43060克,仅溶解0.00311克,占原重的0.005%。按本发明的玻璃粉末和焊条药皮成分配制成的焊条在施焊过程中所形成的焊缝接受低温却贝冲击实验,其结果为:在-40℃温度下焊缝的平均低温却贝冲击值为153J;在-60℃温度为115J。图1为在干表29℃,湿表28℃,相对湿度80%的吸潮条件对本发明的焊条和上述日本专利的焊条进行吸潮率实验的结果,图中附有J标号的曲线是上述日本专利的焊条吸潮率曲线,附有C标号的曲线是本发明焊条的吸潮率曲线,图中的纵坐标a表示吸潮率,横坐标h表示吸潮时间。从图1可见,本发明焊条的吸潮率明显低于上述日本专利的焊条的吸潮率。

Claims (2)

1、一种耐吸潮高韧性焊条,药皮中含有玻璃粉末成分,其特征在于:玻璃粉末成分的用量为焊条药皮重量的5%,玻璃粉末成分的组成为:
30%的SiO2,17.3%的Na2O,20%的K2O,2.4%的CaO,
6.7%的B2O3,4.8%的Li2O,6%的CaF2,6%的TiO2
2、按权利要求1所述的耐吸潮高韧性焊条,其特征是焊条药皮是由下列成分组成:
35%的大理石,35%的莹石,3%的钛白粉,
1%的纯碱,2.5%的硅铁,8%的铁粉,
1%的硅钙,7%的钛铁,0.8%的铝镁,
6.5%的锰铁,2%的硅砂,1.3%的镍粉。
CN 88100122 1988-01-16 1988-01-16 耐吸潮高韧性焊条 Expired CN1007220B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 88100122 CN1007220B (zh) 1988-01-16 1988-01-16 耐吸潮高韧性焊条

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 88100122 CN1007220B (zh) 1988-01-16 1988-01-16 耐吸潮高韧性焊条

Publications (2)

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CN1031670A CN1031670A (zh) 1989-03-15
CN1007220B true CN1007220B (zh) 1990-03-21

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101927407A (zh) * 2009-06-19 2010-12-29 上海大西洋焊接材料有限责任公司 一种低氢型药种皮的锅炉、压力容器用钢专用碳钢电焊条
CN102189355A (zh) * 2010-03-11 2011-09-21 上海大西洋焊接材料有限公司 与ap1000型压水堆安全壳用钢板配套的核电专用电焊条
CN102059482A (zh) * 2010-11-23 2011-05-18 陈宏平 硬脂酸微波反应制备焊条抗吸潮保护膜的方法
JP6216642B2 (ja) * 2014-01-07 2017-10-18 株式会社神戸製鋼所 低水素系被覆アーク溶接棒
CN108568618A (zh) * 2017-03-07 2018-09-25 湖北新谛焊接科技有限公司 一种焊条药皮的配方及其生产工艺和装置

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