High Nickel Steel Sand Casting

Nickel-based cast superalloys refer to cast superalloys with nickel as the main component. With the increase of service temperature and strength, the degree of alloying of superalloys (see superalloy strengthening) is getting higher and higher, and hot forming is more and more difficult, and casting processes must be used for production. In addition, the internal complex cavity of the hollow blade using cooling technology can only be produced by the precision casting process. In this way, the nickel-based wrought superalloy is transformed into a nickel-based cast superalloy.

After more than ten years of precipitation, Zhongwei Precision Machinery Co., Ltd. has rich experience in the production of high-nickel alloys and high-temperature alloy castings. We expect manufacturers from all over the world to consult and negotiate business.

Product Description

1. Implementation standards: The company strictly implements ISO9001 & TS 16949 certification.

2. Material standards for Alloy steel sand casting products: ISO, GB, ASTM, SAE, ISO, EN, DIN, JIS, BS

3. Main process: sand casting, deburring, sand blasting, machining, heat treatment, leak testing, surface treatment, etc.

4. Available materials:high temperature alloys, high nickel alloys, gray iron, ductile iron, cast iron, cast steel, cast aluminum, cast copper, etc. can be customized according to customer requirements.

5. Introduction of Cr15Ni60, Cr20Ni80, Cr20Ni35 materials.

35Ni-20Cr has high nickel and chromium content, high silicon content, and has good oxidation resistance, thermal strength and high positive temperature coefficient below 800 ℃. At room temperature, it has high plasticity, cold stamping and welding properties. The alloy is single-phase austenite after solution treatment, and the structure is stable during use.

Metallographic structure of Cr20Ni35:

Cr20Ni35 alloy is a single-phase austenite structure

Cr20Ni35 application range Application areas are:

1. As a heating element, it is mainly used in periodic heat treatment furnaces with a temperature below 800 °C, such as crawler heating devices, tempering furnaces, etc.

2. Electric heating wire for electric heating tube and household electric heater

3. Resistor strips for use in high-quality resistor boxes

Cr20Ni35 duplex stainless steel type, containing high molybdenum and nitrogen, grade UNS S32750 (25Cr-7Ni-3.7Mo-0.3N), some also contain tungsten and copper, PREN value greater than 40, can be suitable for harsh media conditions, with good The comprehensive corrosion resistance and mechanical properties are comparable to those of austenitic stainless steel. There are many types of stainless steel with different properties. It has gradually formed several categories in its development. According to the structure, it is divided into four categories: martensitic stainless steel (including precipitation hardening stainless steel), ferritic stainless steel, austenitic stainless steel and austenitic plus ferritic duplex stainless steel; Some characteristic elements in steel are classified into chromium stainless steel, chromium-nickel stainless steel, chromium-nickel-molybdenum stainless steel, low-carbon stainless steel, high-molybdenum stainless steel, high-purity stainless steel, etc.; Sulfuric acid resistant stainless steel, pitting corrosion resistant stainless steel, stress corrosion resistant stainless steel, stainless steel, etc.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. supplies stainless steel and nickel-based alloys and other products. The business department, finance department, transportation department and warehousing department under the business department provide users with loading and unloading services. Guaranteeing the interests of users, doing business with mutual benefit, and making friends with sincerity are the criteria, and are well received by new and old customers. Zhongwei will, as always, continue to develop and manufacture high-quality products to meet the needs of our customers. The company has now developed rapidly in the market field. The company has accumulated sufficient experience and service knowledge in the market for a long time. In the field, it can provide high-quality products and services to the market at any time.

Post Casting Process

1. Heat treatment: annealing, carbonization, tempering, quenching, normalizing, surface tempering

2. Processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

3. Surface treatment: powder spraying, chrome plating, painting, sandblasting, nickel plating, galvanizing, blackening, polishing, bluing, etc.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam)

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control of High chromium sand cast iron: The defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements

3. Testing equipment: flaw detection, spectrum analyzer, golden image analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine;

4. Provide after-sales service.

5. The quality can be traced back.

Application

High-nickel cast iron products have the characteristics of good corrosion resistance, heat resistance, wear resistance, microstructure stability, thermal expansion, and non-magnetic properties. It can manufacture mechanical product parts of various shapes. High nickel steel sand casting is widely used in valve stem nut of gate valve, bushing of butterfly valve, shell of seawater desalination valve, bearing seat of petroleum metering pump, automobile engine and other important mechanical parts.