Banner
Home > News Center > Content
How to deal with alkali corrosion in Guangdong stainless steel casting
- 2019-06-27-

Guangdong stainless steel casting molding process:

1. Gravity casting: sand casting, hard mold casting. Rely on the gravity of the metal itself to pour molten metal into the cavity.

2. Pressure casting: low pressure casting, high pressure casting. Rely on the additional pressure to instantly press the molten metal into the casting cavity.


Casting process:

1. Preparation of casting molds (containers that make liquid metal into solid castings). Casting molds can be divided into sand, metal, ceramic, clay, graphite, etc. according to the materials used, and can be divided into disposable and semi-permanent according to the number of uses. Mold and permanent mold, the pros and cons of mold preparation are the main factors affecting the quality of castings;

2. Melting and pouring of cast metals, cast metals (casting alloys) mainly include various types of cast iron, cast steel, and cast non-ferrous metals and alloys;

3. Processing and inspection of castings for coffee machine parts. The processing of castings includes removal of foreign bodies on the core and surface of castings, removal of pouring risers, shovel grinding burrs and drape seams and other protrusions, as well as heat treatment, shaping, anti-rust treatment and rough processing.


The casting process can be divided into three basic parts, namely casting metal preparation, mold preparation and casting processing. Casting metal refers to the metal material used for casting castings in the production of casting. It is an alloy composed of a metal element as the main component and adding other metals or non-metal elements. It is customarily called a casting alloy, mainly including cast iron, Cast steel and cast non-ferrous alloys.


Metal smelting is not only a simple melting, but also a smelting process, so that the metal poured into the mold meets the expected requirements in terms of temperature, chemical composition and purity. For this reason, various inspections and tests for the purpose of quality control must be carried out during the smelting process, and the liquid metal can only be allowed to be poured after reaching the specified indicators. Sometimes, in order to meet higher requirements, the molten metal of the stainless steel parts of the robot must be processed outside the furnace after being released, such as desulfurization, vacuum degassing, refining outside the furnace, inoculation or deterioration treatment, etc. Commonly used equipment for smelting metals includes cupola, electric arc furnace, induction furnace, resistance furnace, reverberatory furnace, etc.