Over the years, we have won the recognition and praise of domestic and foreign users in the field of Grate Castings, Tube Truss, Sintering Trolley Castings. Welcome new and old customers and technical experts to give valuable advice and guidance to our products. This company uses excellent technical force, good product quality, and perfect after-sales service, to win the trust of customers. We guarantee that it will be carried out before the product inspection, and the customer provides a guarantee for the product. Our company with good reputation, perfect after-sales service, customer first management belief, sincerely welcome friends from all walks of life at home and abroad to cooperate sincerely. We are committed to providing consumers with quality products and excellent services.
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.
In the spirit of being highly responsible for consumers, all Grey/Gray Cast Iron Casting Gg15/Gg20/Gg25/Gg30 CNC Machining for Motor Parts Sand Casting Parts 069 we produce and sell implement a third-party inspection system, and all jewelry has been tested by inspection agencies. All departments have carried out strict contract audit to ensure the feasibility of each order. With our efforts, our company has established a long-term stable international market, has a good cooperation relationship with many domestic manufacturers and has a stable supply channel.
