The goal of controlling welding stress is to reduce its peak value and make it evenly distributed. The stress measures of Shandong automatic welding equipment mainly include the following:

1.減小焊接拘束度：盡量使焊縫在較小拘束度下焊接，盡量不用剛性固定的方法控制變形,以免增 大焊接拘束度。

1. Reduce the welding restraint: try to weld the weld under a small restraint, and try not to control the deformation by rigid fixation, so as not to increase the welding restraint.

2.采取合理的焊接順序：在焊縫較多的組裝條件下，應先焊收縮量較大的焊縫，后焊收縮量較小的焊縫；先焊拘束度較大而不能自由收縮的焊縫，后焊拘束度較小而能自由收縮的焊縫。

2. Adopt reasonable welding sequence: under the assembly condition of more welds, the welds with large shrinkage shall be welded first and then the welds with small shrinkage; Weld the weld with large restraint and can not shrink freely first, and then weld the weld with small restraint and can shrink freely.

3.減小焊縫尺寸：在滿足設計要求的條件下，不應加大焊縫尺寸和層高，要轉變焊縫越大越安 全的觀念。

3. Reduce the weld size: under the condition of meeting the design requirements, the weld size and layer height shall not be increased, and the concept that the larger the weld is, the safer it is shall be changed.

4.錘擊法減小焊接殘余應力：在每層焊道焊完后，立即用圓頭敲渣小錘或電動錘擊工具均勻敲擊焊縫金屬，使其產(chǎn)生塑性延伸變形，并抵消焊縫冷卻后承受的局部拉應力。

4. Hammering method to reduce welding residual stress: after each layer of weld bead is welded, use a round head slag hammer or electric hammering tool to evenly knock the weld metal to produce plastic extension deformation and offset the local tensile stress borne by the weld after cooling.

5.采用拋丸機除銹：通過鋼丸均勻敲打來抵消構件的焊接應力。

5. Derusting by shot blasting machine: the welding stress of components is offset by uniform knocking of steel shot.

6.降低焊件剛度,創(chuàng)造自由收縮的條件。

6. Reduce the rigidity of weldment and create conditions for free shrinkage.

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Taian Yangfan Numerical Control Technology Co., Ltd. is a technical enterprise engaged in welding automation equipment, integrating design, R & D, manufacturing and sales. The company's main products include complete sets of welding automation equipment, CNC cutting machines, industrial welding robots, digital inverter welding power supply, weld tracking system and welding wiggler. It is a supplier of complete sets of automatic and intelligent welding equipment with good comprehensive technical strength. The products are widely used in machinery manufacturing, chemical industry, auto parts manufacturing, agricultural machinery, construction, metal bellows, solar water heater, electric water heater, stainless steel products and other fields at home and abroad. In many regions, the product quality and performance have been unanimously praised by users.