Specific description of the operation method of rigid waterproof casing used at the penetration wall

For laser welding at the penetration wall for rigid waterproof casing, it is easy to vaporize and perforate the material because it is very thin, to get a continuous, non-burn-through weld. By focusing the laser beam in a very small area through an optical system, a highly concentrated energy heat source zone is formed at the welded area in a short period of time, thus melting the welded material and forming a solid welded joint and seam. Shrinkage is used for rigid waterproofing casing steel through the wall is a liquid state in the mold inside the contraction, sometimes due to the impact of the environment, such as air, temperature, etc. and the formation of some shrinkage cavity, in professional terms is called shrinkage.
Transverse crack this is relatively easy to understand, is through the wall for rigid waterproof casing surface occurred in the transverse crack, generally in the ingot period will occur in the transverse crack phenomenon, but most of them are shallow depth. Through the wall for rigid waterproof casing in the upper part or corners which may appear longitudinal cracks, then in the lower area will sometimes also appear shell skin makeup or tumor makeup of metal sputtering sticky, looks like a layer of scarring. Through the wall for rigid waterproofing casing tube should be placed between face to face or back to back, in addition to pay attention to the wear and tear of the tool, and whether there are burrs, etc.. Through the wall for rigid waterproof casing tube for cutting processing, should first confirm through the wall for rigid waterproof casing tube whether there is a scratch phenomenon, in order to check the quality of incoming materials. If there are scratches, should be returned, can not be processed. Through the wall for rigid waterproof casing tube for bending, to check the upper and lower mold and the plate material for impurities or foreign objects.
Through the wall for rigid waterproofing casing tube welded from steel plate, weld cracking is generally too deep at the weld grinding, so that the weld is too thin in the process of processing caused by the cracking phenomenon, belongs to the quality problem, which is not qualified through the wall for rigid waterproofing casing welded pipe, if not used is not found this problem, is generally used only after the discovery of this problem, so to our life is also brought A little trouble.