Our company has established layers of organization and strict management system to ensure the excellent quality of our Metal Crusher Hammer Castings, Two-stage Gas Furnace, Coal Gasifier Design. We have a technical team that represents the highest level in the industry, a strong, professional, and high-quality construction team, professional technology, and excellent quality. Over the years, we have provided services to major enterprises, able to predict problems in time and provide effective solutions for customers. In the fierce market competition environment, the company is united and pragmatic, working hard to start a business for development. We attach importance to investment in scientific research, establish a professional R&D team, shape the core competence of R&D in material and formulation technology, basic R&D, and analysis technology, and master a number of new technology patents.
Compared with ductile iron casting, due to the large specific volume of graphite, the shrinkage of the gray iron valve castings during solidification is reduced, the process can be simplified, the stress of the casting can be reduced, and a dense structure can be obtained. In addition, because the chemical composition of gray cast iron is close to the eutectic point, the molten iron has good fluidity and can cast very complex parts.
Product Parameter
Product name | Gray Iron Valve Castings |
Material Processing | Forging, Casting, Welding |
Heat Treatment | Annealing, Normalizing, Q&T, Induction Hardening |
Weight/Unit | 100kgs - 60 000kgs |
Application | Mining, Cement, Construction, Chemical, Oil Drilling, Steel Mill, Sugar Mill, and Power Plan |
The basic feature of high-density molding sand for gray iron castings is that the amount of coal powder added is also low. Therefore, we control a few points when preparing sand.
① Clay content and mud content. Molding sand with high clay content increases its strength as the specific pressure increases, and the effective bentonite is usually controlled at 7% to 10%. The sum of effective clay and dead clay in the molding sand is equivalent to the mud content, and the mud content is generally controlled at 12% to 16%. Too high or too low mud content will affect the performance indicators of the molding sand.
② Moisture. The moisture in the molding sand of lost foam castings is the main factor that determines the plasticity and bonding force of the clay. When the water content is too high, it is easy to cause the clay cohesion to deteriorate, the fluidity of the molding sand decreases, and the uniform mold density cannot be obtained. When the moisture is too low, the molding sand is not easy to mix, the molding sand has low strength, high brittleness, poor mold release, and easy to cause sand sticking defects in castings. Generally, the moisture content should be controlled to be 10% to 20% higher than the moisture when the peak wet compressive strength is obtained.
③ Grain size of raw sand. In high-density molding, the sand mold has a higher density and large expansion during pouring. Therefore, the raw sand size should not be too concentrated. The raw sand particles are round or polygonal. Generally, three-screen sand or four-screen sand is selected.
Casting Display
Company Certificate
FAQ
Q1: Who are we?
A: Jinan Haiyao New Energy Equipment Co., Ltd. is a wholly-owned subsidiary of Jinan Huangtai Gas Furnace Co., Ltd. Located in Quancheng-Jinan, Shandong, after continuous innovation and development on the basis of inheriting the traditional construction technology of the Chinese nation, the company now has the ability to provide valve casting, vehicle casting, gray iron valve castings, mechnical castings and so on.
Q2: How long is our delivery time?
A: Delivery samples within 25 work days,60 work days for mass production
Q3: What are our terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shipment. If you have another question, pls feel free to contact us.
We present you very best price of money and we are ready to develop alongside one another with High Precision Gray&Ductile Iron Casting for Water Pipeline Valve Parts. We insist on establishing trust with sincerity and devote ourselves to industry chain integration and model innovation, so that our customers can trust us with confidence. 'Create brand by technology, win customers by service, seek development by reputation and survive by quality' is our consistent policy.
