Stainless steel casting factory

   1, since the stainless steel casting in metal mold is cooled and solidified faster than the sand in metal type nor the capacity to make, and therefore when the metal casting, foundry casting stress generated in a large crack tendency to be bigger than sand casting, also prone to water shortage, cold shut, White (for casting casting) and other defects. usually:
   (1) generate insufficient in preventing the stainless steel casting poured cold traps, etc. should pay attention to the following structural problems: A, castings should try to have a streamlined shape to avoid sharp edges and shape of the connecting structure dramatic changes, etc., in order to facilitate the flow of molten metal ; B, casting wall thickness can not be too thin to be appropriate, especially when a large outline dimensions when casting more can not be too thin; C, should avoid large level, because it makes the casting in the pouring molten metal rises slowly, and air contact area is large, easily oxidized, and because the metal type heat quickly, the liquid metal soon lose mobility, could easily lead to lack of water, cold traps, slag and other defects;
   (2) prevent the stainless steel casting cracks should pay attention to the following structural problems: A relatively weak for the structural part of the rib should be set up, to be the boss and so strengthen, to prevent casting crack; B, the reinforcing ribs are arranged in the casting, but also It should take into account the shrinkage of the casting; C, should minimize casting hinder free shrinkage projection bosses, ribs, flanges, etc; D, in uniform thickness, intramural and connection to ease the transition, the more corners and other appropriate requirements should be more stringent than rounded sand casting casting number; E, the walls should be attached to tilt vertically connected.
   2, in the design of the basic structure of the stainless steel casting unit and its parameters selected, usually should also be noted:

   (1) To prevent gray iron castings produce white, in addition to taking measures from the process, but it must not be too thin wall thickness (Some data indicate that the wall thickness of 15mm or more at the time, with the corner casting metal casting must use fillets, for aluminum, magnesium alloy casting metal castings fillet of not less than 3-4m, cast iron, steel, copper alloy casting rounded metal casting parts see Table 1.1-32 selection;

  (2) the metal type and the core make no resistance, to facilitate removal of the casting and the extraction type, metal casting castings should slope suitably large sand casting than some of them, the general should be 30% -50%, it should be pointed out: the slope of the size of the casting and alloy species except, wall height related, but also with the position regarding the casting surface, where the casting cooling contraction and the tendency to leave the surface of the metal type of casting surface can be designed smaller slope, and in the casting tends to shrink pressed against the metal mold casting surface should be given a greater slope, various stainless steel casting alloy cast slope;

  (3) the metal type heat quickly, so the minimum wall thickness of the stainless steel should be higher than sand casting foundry casting to a large number of various casting alloys, casting minimum wall thickness of different sizes; (4) the casting wall and the inner rib The thickness is generally connected to the outer wall thickness should take 0.6-0.7, otherwise due to the inner wall (rib) cold slow when casting shrinkage cracks easily, including the outer wall of the junction.
    3, in the design of more complex shapes stainless steel casting, if the production process have greater difficulty, should not affect the casting conditions of use, try to make the casting shape is simple, configuration changes, in order to remove the cast from the metal type. Wuxi Stainless Steel Precision Casting Factory Home sol precision casting casting http://www.cnwxyszj.com

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Stainless steel castings

Stainless steel castings

Stainless steel castings