Centrifugal Casting Stainless Steel

Centrifugal casting is a casting method in which liquid metal is poured into a rotating mold, filled and solidified into a casting under the action of centrifugal force. The machine used for centrifugal casting stainless steel is called centrifugal casting machine. Centrifugal casting machines are divided into three types: horizontal type, vertical type and inclined type, according to the direction of the rotation axis of the mold. The horizontal centrifugal casting machine is mainly used for casting various tubular castings, such as water pipes and gas pipes of gray cast iron ductile iron, with a minimum diameter of 75 mm and a maximum of 3000 mm. Carbon steel, alloy steel pipes, and double-layered steel rolls requiring different compositions of inner and outer layers. Vertical centrifugal casting machines are mainly used to produce various annular castings and smaller non-circular castings.

Product Description

Basic situation of centrifugal casting stainless steel

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

2. Product material standards: ISO, GB, ASTM, SAE, ISO, EN, DIN, JIS, BS

3. Main processes: sand casting, silica sol investment casting, water glass investment casting,shell casting,deburring, sand blasting, machining, heat treatment, leak testing, surface treatment, etc.

4. Available materials:

High manganese steel, high chromium steel, high nickel steel, carbon steel, alloy steel, stainless steel, gray iron, cast iron, cast steel, cast aluminum, etc. are customized according to customer requirements.

Principle and Features

The principle and characteristics of centrifugal casting stainless steel

1.Basic principle: Centrifugal casting is a technology and method of injecting liquid metal into a high-speed rotating mold, so that the molten metal fills the mold and forms a casting under the action of centrifugal force.

2. The functions of centrifugal force are: the liquid metal can fill the mold well in the radial direction and form the free surface of the casting; a cylindrical inner hole can be obtained without a core; it is helpful for the exclusion of gas and inclusions in the liquid metal ; Affect the crystallization process of the metal, thereby improving the mechanical and physical properties of the casting.

Production Process

In centrifugal casting production, mold speed, pouring system, pouring amount, solidification under slag, metal filtration, coating use, pouring temperature, casting release, etc. are process problems that must be determined or solved, because they directly affect the quality and quality of castings. Productivity.

Centrifugal casting, furnace tube products such as temperature-resistant and pressure-resistant high-chromium-nickel alloys, corrosion-resistant and wear-resistant alloys, and a series of static castings. Beams, grate bars, hot and cold ore sieve plates, heat-resistant slide rails, beams, furnace rollers, and high wire, bar wire, various guide design and manufacture, bar wire two-cut, three-cut, four-cut Guide design and manufacture. The company focuses on heat-resistant and wear-resistant steel casting, plate welding, and machining production. It integrates resin sand mold, carbon dioxide no-hardening sand mold, precision casting, and centrifugal casting. Productivity from kg to 25,000 kg. In addition to the production of heat-resistant and wear-resistant steel materials according to national standard grades, the company has also continuously developed material grades for internal control of the enterprise in recent years.

Our company's main casting processes include centrifugal casting, centrifugal casting, stainless steel castings, (EPC) negative pressure casting and so on. The introduced new process of negative pressure casting (EPC) lost foam vacuum suction casting has high mold dimensional accuracy, uniform material structure and stable performance, especially for reducers, unequal wall thickness tubes, eccentric tubes, tapered tubes, etc. The special-shaped parts are cast as a whole. The company can produce centrifugal casting pipes, rollers, tanks, sleeve castings, stainless steel castings, etc. of Ф56~2000mm, length 2000~6000mm, etc. Among them, large-diameter stainless steel seamless steel pipe castings have passed the national steel product quality supervision and inspection test. The test of the center has proved that it meets and partially exceeds the Japanese JIS standard. It won the Science and Technology Innovation Award at the first China Science and Technology Expo, and won the Gold Cup Award at the "New Materials, New Technology, New Equipment" promotion meeting of China Petrochemical Corporation.

The company now has induction furnaces, electric arc furnaces, out-of-furnace molten steel purification devices, multiple horizontal centrifugal casting machines, precision casting, and vacuum solid casting equipment. Our company has strong technical force, advanced equipment and technology, mature technology and complete testing means, and has formed a complete system integrating product research, development, production and quality management. Centrifugal casting, centrifugal casting pipes, stainless steel castings and other products are widely used in electric power, metallurgy, petrochemical, petroleum, nuclear energy, aerospace, environmental protection, building materials, papermaking, heat treatment and other industries. Centrifugal casting stainless steel has been exported to more than a dozen countries and regions such as Russia, France, South Korea, Japan, Pakistan, Iran, Kazakhstan, and Hong Kong.

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: 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

Stainless steel pipe is a kind of hollow long round steel, which is mainly used in industrial transportation pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and so on. In addition, when the bending and torsional strength are the same, it has the advantage of lighter weight, and centrifugal casting stainless steel is also widely used in the manufacture of mechanical parts and engineering structures.