Surfacing cutting edge welding method
A welding method and cutting edge technology, which are applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of mold cutting edge gnawing, irregular shape of toughness, and large usage, so as to improve manufacturing efficiency and improve production efficiency. Economic benefits and cost-saving effects
Inactive Publication Date: 2021-11-16
格致汽车科技股份有限公司
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Problems solved by technology
[0003] With the rapid development of the automobile industry, the processing, manufacturing and use of various stamping dies are becoming more and more common. For example, parts such as hoods and top covers are used in large quantities, and the forming dies are large in size and complex in structure, and often have die blades. The mouth often produces damage, chipping, partial cracking, etc., although in order to reduce the maintenance cost, inserts are used in the design and manufacture of the mold for assembly, but due to the large size of individual inserts, the structure is more complicated, especially for repairs. Side mold, its ductile shape is very irregular, and is limited by the shape and size of the workpiece
Method used
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Experimental program
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Embodiment Construction
[0019] One of the examples is as follows
[0020] Process parameters:
[0021] (1) Selection of electrodes for edge surfacing. Argon arc welding (chamfering 5mm*5mm);
[0022] (2) The temperature before welding with HN-5R electrode for backing welding is the same as room temperature. The welding layer of the bottom welding is required to be thin and uniform, and the thickness is not more than 1mm. If the welding layer of the bottom welding is too thick, the hardness of the surface welding layer will be reduced, and the quality of the surfacing welding of the cutting edge will be affected;
[0023] (3) NH-660R electrode for surface welding, the temperature before welding is the same as that of bottom welding, and the thickness is 2mm higher than the surface;
[0024] (4) Electrode diameter: 1.6mm; Welding equipment: MIG welding; Welding current: 70-75A for bottom welding, 70-75A for surface welding; Surface hardness after welding: 52-56HRC, penetrability of imaging agent flaw...
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Abstract
The invention provides a surfacing cutting edge welding method, and belongs to the field of machining. A surfacing cutting edge process method is adopted on a common cast iron matrix to replace an alloy insert and cast steel, the manufacturing and repairing process is simple and reliable, the structure and hardness of the cutting edge can meet the use requirements, the manufacturing efficiency is improved, the cost is saved, and good economic benefits are obtained.
Description
technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a welding method for surfacing welding edges. [0002] technical background [0003] With the rapid development of the automobile industry, the processing, manufacturing and use of various stamping dies are becoming more and more common. For example, parts such as hoods and top covers are used in large quantities, and the forming dies are large in size and complex in structure, and often have die blades. The mouth often produces damage, chipping, partial cracking, etc., although in order to reduce the maintenance cost, inserts are used in the design and manufacture of the mold for assembly, but due to the large size of individual inserts, the structure is more complicated, especially for repairs. The shape of the side mold is very irregular, and it is limited by the shape and size of the workpiece. Contents of the invention [0004] Aiming at the deficiencies of...
Claims
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IPC IPC(8): B23K9/04B23K9/235B23K9/32
CPCB23K9/04B23K9/235B23K9/32
Inventor 孙博文
Owner 格致汽车科技股份有限公司