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...

The Advantages Of Low-Temperature Radiant
    Low-temperature radiant tube heating element is used for drying furnaces equipment heating element, compared with the ordinary electric heating tube elements, its advantage is: 1.Convenient installation, test and maintenance, are conducted...

Preventing Method Of The Casting Deformat
    The deformation of the casting method of prevention and cure: A. large planar casting set stiffeners, mold design against deformation; B. casting wall thickness design transition not too large, the cross section shape is symmetrical; C. mea...