铝合金焊丝熔体测氢与固体测氢对比分析  

Analysis on Determination of Hydrogen in Aluminum Melt and in Solid Alloy Wire

作　　者：张硕 王博 严志刚 林中强 黄智恒 张永冲 ZHANG Shuo;WANG Bo;YAN Zhigang;LIN Zhongqiang;HUANG Zhiheng;ZHANG Yongchong(China Academy of Machinery Ningbo Academy of Intelligent Machine Tool Co.,Ltd.,Ningbo 315700,China;Hangzhou Oxygen Plant Group Co.,Ltd.,Hangzhou 311305,China;Zhejiang Yuguang Aluminum Material Co.,Ltd.,Jinhua 321200,China)

机构地区：[1]中国机械总院集团宁波智能机床研究院有限公司,浙江宁波315700 [2]杭氧集团股份有限公司,浙江杭州311305 [3]浙江宇光铝材有限公司,浙江金华321200

出　　处：《电焊机》2024年第2期116-121,共6页Electric Welding Machine

基　　金：浙江省异质增材工程研究中心资助项目;宁波市“3315”人才计划2020年创新团队C类;宁波市自然科学基金项目(2022J052)。

摘　　要：为严格控制铝合金焊丝内在氢含量,分析了铝合金焊丝冶炼过程中充氩工艺参数对合金熔体及固体氢含量的影响,并比较了熔体测氢与固体测氢方法的异同。结果表明,2~4吨铝熔体冶炼过程中,减小精炼氩气的流量可以显著减少合金熔体减压凝固测氢试样纵切面上的气孔数量和尺寸,降低熔体的氢含量,当充氩流量为8~10 mL/min时,熔体除氢效果达到最佳;固体测氢方法可以准确提取固体焊丝中的真实氢含量(单位:ppm),经过计算1 mL/100 g Al等价于0.899 ppm,当氩气流量控制在8~10 mL/min时固体焊丝合金中的氢含量为0.17~0.18 mL/100 g Al,可满足低氢焊丝生产要求;同等充氩工艺条件下,固体测氢值高于熔体测氢值,二者比值保持在1.7~2.1之间,固体测氢与熔体测氢各有优劣,二者可以互为补充、配合使用。The effects of argon refining process parameters on the hydrogen contents in ER4043 aluminum melt and the resulting solid alloy wires were investigated.Experimental results show that reducing the argon flow rate during gas refining can significantly reduce the hydrogen content of melt and decrease the number and size of pores on the longtitudinal section of the samples prepared by reduced pressure test.When the argon flow rate was at 8~10 mL/min,the hydrogen content in melt reached the minimum value.Bulk hydrogen of solid ER4043 alloy wires can be obtained accurately by the LECO RHEN602 hydrogen determinator.Similarly,when the flow rate of argon during smelting was controlled at 8~10 mL/min,the bulk hydrogen in solid alloy wire reached the lowest value of 0.17~0.18 mL/100g Al,which could meet the technical requirements of low hydrogen aluminum alloy wire production.In addition,under the same argon refining process,the bulk hydrogen content in solid alloy wire was higher than the hydrogen content in melt,and the ratio of the former to the latter was kept between 1.7 and 2.1.

关 键 词：铝合金焊丝 氩气精炼 熔体测氢 固体测氢 

分 类 号：TG422.3[金属学及工艺—焊接]