Gas hole exists on the surface or internal area of the casting. Gas or porosity appears as a round, smooth-walled cavity, it may appear as a slightly oxidized surface of varying diameter, a bubble formed in the casting during cooling. This occurs because most liquid materials can hold a large amount of dissolved gas, which is expelled when the metal solidifies. Gas porosity may present as pores on the surface of the casting or porosity may be trapped inside the metal. Internal holes are usually pear-shaped. Choke holes are irregularly shaped and have a rough surface. Surface gas holes can be detected by visual inspection, however, subsurface holes can only be detected after machining.
A Complete Guide to Stainless Steel Casting
Stainless steel casting is a manufacturing process that involves pouring molten stainless steel into a mold to create a solid object of a desired shape.
The good corrosion resistance and high strength of stainless steel castings both make it popular in marine, food machinery, construction parts, medical and other applications. Therefore, stainless steel is the most popular material used in casting production.
Stainless steel can be cast using various methods, including centrifugal casting, sand casting, lost foam casting, investment casting, etc. Each method has its own advantages and disadvantages, and the choice of method depends on the specific application and requirements. What is the most popular casting method for stainless steel? As a professional stainless steel castings manufacturer and supplier, we will introduce everything about stainless steel casting.