Hebei Yogem Castings Co., Ltd

The weldability of gray cast iron is poor. During the welding process, the welded joint is prone to stress cracks; the weld is prone to porosity; easy to generate insoluble SiO2; easy to appear brittle and hard white structure; due to the liquid metal fluidity of gray cast iron Very good, can only be welded in the flat welding position. As a   Grey Iron Casting Company , share with you. Because the temperature of the gas welding flame is much lower than the arc temperature, the heating and cooling of the castings during welding are relatively slow, which can effectively prevent white holes, cracks and pores. Therefore, the welding quality is high, and it is easy to machine cutting after welding. The disadvantages of gas welding are low productivity, high cost, poor working conditions, and difficult penetration of large castings. Preparation before welding If the casting defect is a crack, find both ends of the crack and drill a crack arrest hole (usually about 6mm in diameter). The...

Gray cast iron is cast iron with flake graphite. Gray cast iron is currently the most widely used cast iron. Its output accounts for more than 80% of the total cast iron output. Because of its cheap price, gray cast iron is used in   OEM Castings Supplier . Is very extensive. The factors affecting the structure and properties of gray cast iron are generally divided into two types: Pulley Casting 1. The influence of chemical composition is relatively large; 2. The cooling rate will also affect the casting. The faster the cooling rate, the easier it is to form white iron. In the casting process, if the process is not well controlled, there will be many defects and problems. The following cast iron manufacturers will give you a detailed description of the impact of hot cracks and cold cracks on castings: 1. Thermal cracking 1. The characteristics and discovery methods of thermal cracking: The places with thermal cracks have dark or almost black oxidized surfaces. Such thermal cracks ...

Grey Iron casting   Valve Housing Product Description OEM Service Custom grey iron ductile iron sand cast iron We are the leading producer of gray, ductile iron in China, melting more than 600 tons per month. Our grey iron castings  are created by a workforce that puts generations of expertise to work for our customers every day. Those customers trust Hebei Yogem  for high quality gray cast iron and ductile cast iron parts that are consistently the most durable, reliable, and innovative products on the market. Product Description: Material Gray iron or ductile iron, brass, carbon steel, copper, aluminum, etc standard DIN, ASTM, BS, JIS, ANSI, GB etc. process Sand casting, precision casting, investment cast, lost wax casting, die casting, forging, stamping, machining, Weight range 0.1-1800kg Surface treatment painting, polishing, heat treatment, plaining or galvanization etc. Size and design As per the customer's drawings and requirements As per the customer's samples Mach...

  Grey Cast Iron Casting The key part in the production of stainless steel castings is the sand treatment part, which is the treatment of dry sand. The selection of these types of sand will have less dust and will have a good effect, especially the pearl sand. Even if there is no sand treatment for the time being, it will be artificially cooled. Sand dust removal is relatively quicker. Commonly used dry sand for stainless steel castings is generally washed quartz sand, sea sand and pearl sand, with a particle size of 20 to 40 mesh, mainly based on its fire resistance, that is, the silicon content cannot be less than 95%; The first two kinds of sand are selected for their ventilation function, which is more economical because they are suitable for general castings. Secondly, gem sand is classified as artificial sand. It has better functions and is more economical. Only the price is four to five times higher than ordinary sand. The one-time investment will be relatively large. Howeve...