The Correction Method Of Heat Resistant S
    Heat-resistant steel castings produced deformation at room temperature or heating conditions through mechanical or manual method to correct, according to the different heating method for both cold and hot state corrected correction. Hot cor...

Casting Cold-lap Defect Prevention Method
    Casting cold-lap defect prevention methods 1)using high box or booster sprue cup on improve the liquid metal pressure head. 2)layout runner system reasonably, increase the sprue in the broken area, to increase the number of internal sprue or...

The Characteristics and The Causes of Def
    1.Casting cold-lap defect featuresAfter the metal liquid filling and liquid metal in the junction of fusion is bad, and penetrate in casting or not through the gap called cold insulation.Appear on the far away from the port of the surface of...

Wax Mould of Seam Defects and Self-adhesi
    1, wax models exist, this is one of the most common defects, namely in the pressed close type, pressure type combination of joint, the joint of core and core city and other places have very thin slices of wax to escape.The reasons are mainly...

Wax Mould Deformation and Filling of The
    1, the wax pattern deformation, after wax models out of the mould, in addition to the size change narrow, sometimes because of the technique is not correct when taken out of man-made deformation;Because the wax models flexure deformation is...

The Cause of The Furnace Bottom Roll Bend
    Roller hearth heat treatment furnace is plate heat treatment production line in standard configuration, state of the furnace bottom roll is good or not will directly affect the appearance and quality of steel plate factory.Production of furn...

The Furnace Bottom Roll Bending Processin
    Roller hearth heat treatment furnace is plate heat treatment production line in standard configuration, state of the furnace bottom roll is good or not will directly affect the appearance and quality of steel plate factory.In the production...

Precision Casting Porosity Causes
    Porosity is one of common precision casting defects and porosity is refers to the individual location precision castings. Smooth hole defects. Stomatal usually are found after machining. Reasons: 1. The majority of cases appear porosity is...

Investment Casting To Avoid Porosity Prev
    Investment casting to avoid porosity of prevention 1.In the precision casting conditions allow, the complex structure of casting the top. Set the vent.2. When designing gating system, to fully consider the shell exhaust demand. 3.The shell...

Alloy Steel Smelting Casting Of Ingredien
    1.Alloy steel smelting, if want to produce high-end casting products, should choose the high quality metal materials; Common casting products, under the premise that ensure the quality of products should choose low cost raw materials. 2.All...

Radiant Tube Common Malfunction And Troub
    Item fault phenomenon Primary analysis Troubleshooting Methods 1 Short circuit component 1 、Resistance wire contact with steel pipe 1 、Resistance wire should be annealed and wound tight 2 、 Resistance wire on the transition between tw...

The Difference Between Electric Heating R
    Electric heating radiant tube is heat transfer by radiation light waves/electric heat transfer in the heat pipe is available in a variety of media. The heating medium is air, radiant tube efficiency higher than that of electric heat pipe. T...