a. Trial production of new products; b. Large changes in the structure, materials and processes of old products; c. Requirements of supervisory agencies at higher levels for type tests. 6.3.2 Type test includes the following: a. The contents of the test included in Chapter V of this standard and 6.1 and 6.2; b. The new material or material composition, the process has major changes, you must do metallographic analysis; c Shell hydrostatic test, stress analysis test; d. Static pressure life test; e. Resistance characteristics test. g. The location of the signs and their parameters according to the provisions of 9.1.1 are correct; Body signs according to the provisions of Article 9.1.2 is correct; h. Factory valves, users do not disassembly inspection before installation, within six months after installation due to product quality There is a problem, by the manufacturer responsible for repair or replacement. After the inspection of qualified products, and check the inspection information is correct, the preparation of the factory number, quality inspection department issued a product certification, the certificate with the product to the user. 9 signs, packaging, transportation and storage 9.1 signs 9.1.1 signs should have the following: a manufacturer name; b product name and model; c main product parameters: nominal pressure, working pressure, temperature limit, the working medium Type, maximum torque; d. Manufacturing date and production lot number; e. Quality grade mark. 9.1.2 Valve body must be cast the following: a. Material code; b. Nominal pressure (or working pressure at the working temperature); c. Nominal diameter; d. Medium flow direction; 9.2 Packaging, Transport and Storage 9.2.1 The valve shall be closed during packaging, transport and storage. After the anti-rust treatment and painting, both ends of the channel to the cover closed to prevent dust, sewage intrusion. 9.2.2 When the product is packed in the factory, it should be fixed in the box, and the weight of the valve itself should not be supported by the hand wheel or the electric device to ensure that the product will not be damaged during transportation. 9.2.3 Each valve should be shipped with the following technical documents, and sealed in a moisture-proof, waterproof bag: a. Product Quality Certificate; b. The main parts of the physical and chemical test reports; c. Total assembly drawing, fragile parts map); d packing list. 9.2.4 The product should be stored in a dry place, do not allow open storage or product stacking.
Drum Support
The die casting process involves the use of a furnace, metal, die casting machine, and die.
The metal, typically a non-ferrous alloy such as aluminium or zinc, is melted in the furnace and then injected into the dies in the die casting machine. After the molten metal is injected into the dies, it rapidly cools and solidifies into the final part, called the casting parts.
The castings that are created in this process can vary greatly in size and weight, ranging from a couple of ounces to 100 pounds. One common application of die-cast parts are housings - thin-walled enclosures, often requiring many ribs and bosses on the interior.
Metal housings for a variety of appliances and equipment are often die cast.
Several automobile components are also manufactured using die casting, including pistons, cylinder heads, and engine blocks. Most home appliances also need lightweight and firm aluminum die casting parts, like bracket, heat dissipation module or structural support. Other common die cast parts include propellers, gears, bushings, pumps, and valves.
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