摘要埋弧焊是焊接中厚板常用的焊接方法，它常规用在平焊、角焊位置的焊接。埋弧横焊是衍生于埋弧焊的一种特种焊接方法。它通过使用机械工装来撑托住焊剂，使焊剂免除重力的不良影响，紧紧敷在工件表面，来实现焊接操作。并使用熔渣粘度较大的特殊焊剂来撑托住熔池，顺利形成焊缝，实现埋弧横焊。

为了熟悉焊剂的制作方法，本课题试制了SJ101焊剂，并将其应用于横焊，结果并不理想。横焊焊剂需要具有较大的熔渣粘度来适应横焊，同时也需要具有较好的焊缝成型性及脱渣性,常规焊剂不能满足这些。这需要合适的渣系，合适的配方。78317

本课题经过多次试验、筛选，最终研制了一种渣系为CaF2-Al2O3-CaO，碱度为1。31的横焊焊剂。它能够满足横焊的特殊要求，也能满足较好的工艺性。本课题研制了实现横焊的工装，研制了满足横焊要求的横焊焊剂。

毕业论文关键词：埋弧横焊，焊剂，熔渣粘度，焊缝成型

Abstract Submerged arc welding is a welding method of plate which is usually used in conventional flat and fillet welding。 Transverse submerged arc welding is a kind of special welding method which is derived from submerged arc welding。 It is through the use of mechanical tooling to support his flux。 And let the flux avoid the disadvantage from the gravity, tightly deposited on the surface of the workpiece。 Then realize the welding operation。 And the use of special welding flux slag viscosity of the molten pool to live。 Smooth formation of the weld, the realization of transverse submerged arc welding。

    In order to know the production method of flux, we try making flux SJ101。And apply it to the transverse welding。 But the result is not ideal。 Transverse welding flux requires large slag viscosity to adapt to welding。 At the same time, it also needs to have a good weld formability and slag removal。 Conventional flux cannot satisfy these。 This requires a suitable slag system and a suitable formula。

After many tests, screening, we made a kind of transverse submerged arc welding flux which is in the slag system CaF2-Al2O3-CaO。And its alkalinity is 1。37。It can meet the special requirements of transverse welding。 It can also meet the better process。 We developed a tool to realize the transverse welding, and developed the welding flux。

Keywords：Transverse submerged arc welding, Flux, Slag viscosity, Weld formability

目  录

第一章 绪论 1

1。1 立项背景与研究意义 1

1。1。1 立项背景 1

1。1。2 研究意义 3

1。2 埋弧横焊应用现状 4

1。3 埋弧横焊焊剂的研究现状 5

1。4 本课题研究的内容 7

第二章 实验设备及工装的设计 8

2。1 埋弧焊设备 8

2。1。1 焊接电源 8

2。1。2 送丝机构 9

2。1。3 焊枪 9

2。1。4 控制箱 10

2。2 工装的设计 10

2。3 本章小结 11

第三章 焊剂配方的设计及焊剂制作 12

3。1 引言 12

3。2 焊剂配方的设计 12