Water pump castings
Water pump castings mainly include appearance quality, internal quality and use quality. Appearance quality refers to the surface roughness, surface defects, dimensional deviation, shape deviation, and weight deviation of the casting; internal quality mainly refers to the chemical composition, physical properties, mechanical properties, metallographic structure, and holes, cracks, inclusions, and Segregation and other conditions; the quality of use refers to the durability of the casting under different conditions, including wear resistance, corrosion resistance, chilling and heat resistance, fatigue, shock absorption and other properties, as well as machinability and weldability.

The inspection process of water pump castings mainly includes:
1. Eye observation, used for obvious defects on castings, such as insufficient pouring, serious surface defects at various levels of cold, etc.
2. Measure the overall dimensions of valve castings to ensure that tolerance requirements are met.
3. Metallographic, chemical, physical and other related castings internal quality inspection. Testing methods include: pressure test to determine the leakage location of the casting; radiographic detection, magnetic particle detection, fluorescence and ultrasonic detection, etc. to detect the surface and internal defects of the casting; mechanical property test to determine the mechanical properties of the valve casting, such as tensile strength and hardness .

Our water pump castings have high strength, rigidity and wear resistance to keep their accuracy from obvious changes with cutting conditions, use time and other factors, so that the processed parts can have the required precision and smoothness. The selection of suitable materials, heat treatment process and reasonable structure is to make the performance of the casting meet the requirements.