Appropriate welding material, election of soldering acid, design of welding heat process and cleaning up influenced the welding quality significantly.
合理的焊接材料、钎剂的选择匹配，焊接加热程序的设计，焊接部位的彻底清理将对端环的焊接质量具有极大的影响。
Two active agents for soldering, 23 Dibromosuccinic acid and cycloalkanamine hydrobromide were synthesized. A series of ES active soldering fluxes were prepared.
合成了2种助焊活性剂23-二溴丁二酸和环烷基胺氢溴酸盐，制备了ES系列活性助焊剂。
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