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The basic flow of stainless steel pump castings
- May 04, 2018 -

In recent years, to a certain extent, along with the continuous development of its enterprises and the intensification of market competition, the castings previously processed by outside association factories have been unable to meet the requirements of customers. Stainless steel pump castings need to change the original cleaning and polishing to the way of processing from the outside to the independent processing. In order to quickly provide quality products to users, we need to master the basic flow of castings.

The basic flow of stainless steel pump castings polishing:

1. Look at the drawings. Effectively according to the requirements of the drawings to see whether the rough surface roughness of stainless steel castings meets the requirements.

2. Heat treatment. After the quality inspection department has passed inspection, the rough castings are forked to the shot blasting machine for the initial throwing cleaning; after the gouging, the casting blanks are first repaired and polished and then examined for heat treatment.

3. Fine throw. After the initial casting, the castings are manually polished and smoothed, and then fine polishing is performed. After finishing, the products do not need to be polished as much as possible.

Finally, the clean-up and polish production line can be normally operated, and various parts can be processed to ensure the production efficiency and product quality.

In order to effectively ensure the successful completion of the goal of saving energy and reducing consumption of stainless steel pump castings, it is necessary to do a good job in these two aspects. Firstly, energy consumption should be allowed for new enterprises, especially small and medium-sized casting enterprises. It is an effective energy-saving measure for existing enterprises and elimination of backward production capacity. Among them, the energy-saving work of existing valve casting companies is the most important one. The energy-saving measures are as follows:

1. Recycle waste heat. By making full use of the residual heat of the cupola furnace, the residual heat can be used to heat the water and use it for living. This will allow the heat recovery rate to reach 80% and increase the energy efficiency.

2. Suitable for smelting equipment. In the process of operation, its enterprises need equipments such as smelting, refining, modeling, core making, sand processing, cleaning, etc., whose production capacity is matched. Enterprises that adopt sand casting technology must be equipped with old sand regeneration and waste sand recycling equipment; It adopts hot air, water-cooled, and continuously operating long furnace-day cupolas; it eliminates outdated equipment that consumes large amounts of energy and effectively reduces energy consumption.

3. Reduce scrap rate. According to calculations, the casting yield rate is increased by 1%. Each ton of molten iron can produce about 8 to 10kg of high-quality cast iron parts, saving 6 to 8kg of coke, and the weight of the casting can be reduced by 1% to 2%. From the perspective of companies reflecting the cause of waste products, most of them focus on defects such as metal fluid flow, porosity, size, and cleaning. They can improve external conditions and improve mold filling capacity. Sand casting technology is used to improve the dimensional accuracy of valve castings and reduce processing waste. .