The Cause of Appearing Crack After The Mo
    1.To use when precision casting wax melting point is too high, easy to appear the phenomenon. 2.Precision casting mold shell, caused by improper ratio of materials. 3.Used in the precision casting mould of cohesion between the layers of the...

Wax Mould Surface Wrinkles And Concave De
    1, wax mould surface wrinkles, as a result of wax material temperature is too low, firing rate is too low, wax material movement and molding temperature mismatch;Or because of the pressure inside surface is damaged or not clean;Chilling met...

Wax Models Of Rough Surface And Air Bubbl
    1, the rough surface wax models, because the pressure is too low, or the firing rate is lower Wax material contact with the inner surface of molding density is not enough, serious still can appear fold. 2, wax models exist bubble, a is the...

The Bottom Of The Furnace Roller Broken R
    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 fur...

The Reason Of Furnace Bottom Roll Breakag
    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...

The Cause Of The Deformation Of Heat Resi
    Heat-resistant steel casting deformation is a common casting defects, some of the reasons for deformation of heat resistant steel castings, the main reason that induces generally have a few kinds: 1. The heat-resistant steel casting casting...

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...