A high-precision optical instrument base frame welding process

Abstract

The invention relates to the field of welding in the equipment manufacturing industry, in particular to a welding process of a high-precision optical instrument base frame. The welding process is suitable for welding of the high-precision optical instrument base frame of a 304 stainless steel material. Manual arc welding is adopted for welding the 304 stainless steel base frame. The type of an adopted 304 stainless steel welding electrode is E308-15, the welding electrode diameter is phi4.0 mm, and the power polarity is direct current reverse polarity. The welding process comprises the steps of pre-welding treatment, the welding process and postwelding heat treatment. According to process parameters in the welding process, the welding current ranges from 250 A to 280 A, the welding voltage ranges from 28 V to 32 V, and the welding speed ranges from 280 mm / min to 320 mm / min. According to the welding process, the problems about assembly locating precision, welding deformation, welding efficiency, weld bead quality and the like are solved, and the weld strength is guaranteed by selecting manual arc welding materials, wherein chemical components of the manual arc welding materials are similar to those of the materials for frame welding, and the strength of the manual arc welding materials is matched with that of the materials for frame welding. The welding deformation is effectively controlled through the assembly welding sequence.

Description

Technical field: [0001] The invention relates to the welding field in the equipment manufacturing industry, in particular to a high-precision optical instrument base frame welding process, which is suitable for welding the high-precision optical instrument base frame made of 304 stainless steel. Background technique: [0002] The base frame of high-precision optical instruments is a welded frame, and the frame is welded by more than 40 304 stainless steel plates. Among them, ensuring the welding strength of the stainless steel plate, controlling the welding deformation of the frame and the structural stability after welding are the technical difficulties . In view of its structural characteristics and technical difficulties, it is extremely important to formulate a scientific and reasonable welding process by optimizing the welding groove of the frame, reasonably arranging the welding sequence, ensuring the accuracy of the frame during assembly, and eliminating the stress of...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-precision optical instrument base frame welding process, using common welding equipment, by adjusting the welding process parameters, rationally designing the welding groove form, and selecting a suitable post-welding stress relief method to obtain a good welding effect And the accuracy of the workpiece is guaranteed, solving the problems of difficult welding of the base frame of high-precision optical instruments and high precision requirements

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