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• Time of issue:2023-01-04 15:00
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(Summary description)How to deal with the problem of electric welding of precision casting parts and how to carry out electric arc welding? As a manufacturer of precision casting parts, let's take you to know! Taking into account various factors, electric welding and symmetrical welding should be used as much as possible for the welding parts of precision castings, followed by overall welding. This can avoid ground stress causing cracks in precision castings and improve their welding quality. When welding precision castings, if the joint is relatively small, it is recommended to use 3.2 welding rods. It is not until the second layer is welded by electric welding that 4.0 welding rods are used. Due to the large size of general precision castings, segmented welding can be carried out in 1/6 turns. For cracks caused during the electric welding process of precision casting manufacturers, they should be cut and welded along both sides of the crack. The deep and long weld seam should be removed from the crack area before re welding. When welding cracks, first seal the stainless steel head and slowly weld along the crack from the root. For those with compressive strength exceeding HRC38, AI02 welding rod shall be used for covering. The parts of precision castings that must be welded by electric welding in different layers should be cleaned and tidy before welding the second layer when the working temperature of the first layer is cooled to 200-300 ℃. The deduction should be made in sequence, and the next layer of electric welding should not be carried out too hastily to prevent poor welding quality. When designing heat treatment fixtures, there are always some difficult problems. As a manufacturer of heat treatment fixtures, it is important to pay attention to the common problems that arise when designing heat treatment fixtures. Let's take everyone together to solve them! 1) Conduct a detailed analysis of the product workpiece structure and standard specifications to achieve maximum standards and specifications. 2) Ensure that the work clothes can reliably carry the entire process of heat treatment for goods and workpieces, and have a long service life. 3) Ensure that the transportation of commodity workpieces is evenly heated, high-frequency quenched, carbonitriding, and uniformly cooled on the work clothes. 4) Transport commodity workpieces as much as possible to improve the production efficiency of heat treatment methods and reduce energy consumption. 5) Try to balance the applicability of work clothes as much as possible, reduce the types of work clothes, simplify the management method of chemical factory decoration, and save costs. 6) Minimize work, raw materials, and manufacturing costs as much as possible.