How To Prevent Precision Casting Porosity
    1, to the complex thin wall castings, in order to improve the precision cast molding shell permeability, where possible, at the top. To vent.Setting up reasonable pouring system and prevent casting gas volume, and is advantageous to the disc...

The Influencing Factors On The Quality of
    Precision casting production of casting a forming, no or less machining can be used, is a kind ofadvanced casting process. Because of the high precision castings to the size and surface roughness requirements, so the whole process of any pro...

How To Rust Protection for Investment cas
    Metal or alloy for oxygen in the atmosphere, water, acid, salt and moist air caused by corrosion or discoloration called rust or corrosion, it can make metal surface layer with high strength compound strength is very low.To this end, often n...

Stainless Steel Precision Casting Process
    Higher than cast iron on the mechanical properties of the stainless steel precision casting, but its less than cast iron casting performance.Its melting point is higher than other, and the liquid steel is easy to oxidation, molten steel flow...

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...