qizhen0926
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The importance of welding of jaw crusher
« on: Jan 25th, 2018, 12:56am » |
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Jaw crusher welding what impact the performance of equipment, jaw broken is most common in the crushing equipment, divided into two kinds of casting and welding, because the casting has certain drawbacks, so welding type jaw broken machine more and occupy the market, so the welding techniques and methods are more and more get the attention of customers, long-term received in broken impact loading, to improve the welding quality, is the issue of research in welding production.
Metal Powder Pusher Reduction Oven
First, porosity is one of the common defects in welding. The existence of stomata first affects the compactness of the weld (air tightness and watertightness), and the effective area of the weld is reduced. In addition, the stomata will also cause stress concentration, significantly reduce the strength and toughness of the weld, and have a significant impact on the dynamic load strength of the structure. Most of the defects found in X-ray inspection film were found to be porosity (80% or so), followed by slag inclusion, incomplete penetration and crack. Therefore, preventing stoma is the main content of welding quality, and also the main measure to improve the pass rate.
Second, cracks are the most dangerous defects in welding connections. According to the time produced, it can be divided into hot crack and cold crack, the former is produced during welding, and the latter is produced after the weld is cooled or cooled. In the welding structure, the use of middle - class cold crack is often a serious quality problem. The generation and development of cold crack are generally more hidden and longer, which usually does not attract the attention of operators, but the result is disastrous.Box Electric Lab Furnace
Third, frame in the process of assembly welding will produce certain deformation, while the deformation is not big, but with other parts after welding, weld length direction of the cross-sectional area, easy to make the stress after welding, the jaw crusher in the work should be under high load equipment is bad, so before assembly welding application method of machining adjustment or correction. In the process of welding, we should pay attention to the reasonable arrangement of welding sequence, because there are more members in the welding frame and the number of welding seams. If we do not pay attention to the welding sequence, there will be a large deformation in the welding process. Before welding, the basic frame points can be fixed and then welded, and the long steel plate should be welded to reduce the deformation of the frame.reheat furnace used in rolling mill induction furnace
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