We are going to make excellent efforts to create new and top-quality goods, meet your special requirements and provide you with pre-sale, on-sale and after-sale companies for Stainless Steel Welding Wire, Oxygen-enriched Circulating Fluidized Bed Gasifier, Large-span Space Steel Structure. While we face the market, we are more adept at using new technology and new products to create the market and discover the potential needs of our customers. We provide customized services, tailor-made for customers, to meet the needs of different customers. Relying on the forward-looking strategic vision, our company has established a unified strategic marketing and service network, with the purpose of pursuing customer satisfaction, and winning the unanimous trust of customers.
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.
Adhering to the business philosophy of 'sales is just the beginning, service will never stop', we are committed to providing customers with more professional solutions for Experienced in Customization 2 Piece Body Ball Valve Cast Iron Sand Casting Suppliers Gray Iron Casting Parts! We always insist on the management tenet of 'Quality is First, Technology is Basis, Honesty and Innovation'. Our core values are providing our customers with perfect overall solutions, great finished products and excellent customer service, and strives to increase products' added value for its core competitiveness.
