Train Water Glass Lost Wax Casting

My country's train castings generally use the investment casting method. Our country began to apply investment casting to industrial production in the 1950s and 1960s. Since then, this advanced casting process has been greatly developed, and has been widely used in aviation, automobiles, machine tools, ships, internal combustion engines, gas turbines, telecommunication equipment, weapons, medical equipment and cutting tools and other manufacturing industries. Manufacture of works of art.

After more than ten years of precipitation, Qinhuangdao Zhongwei Precision Machinery Co., Ltd. has rich experience in the production of trucks, automobiles, forklifts, Train water glass lost wax casting, ductile iron, gray iron, superalloy castings, stainless steel and other 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. 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:

Carbon steel, alloy steel, stainless steel, gray iron, cast iron, cast steel, cast aluminum, cast copper, etc. can be customized according to customer requirements.

Train water glass lost wax casting: Cast steel parts are widely used in EMU traction systems, braking systems, coupling systems and bogies, such as intermediate couplers, universal joint forks, axle boxes, various clamping devices, support frames , shaft-mounted/wheel-mounted disc brakes, coupling fixtures, gearbox brackets, motor seats, center pins, center pin seats, etc. Regardless of type or quantity, steel castings are the most indispensable part of high-speed EMUs.

Quality Requirements

● The production of steel castings involves water glass sand casting, resin sand casting and investment casting;

● Most of the cores are made of coated sand-shooting cores;

● Generally, intermediate frequency furnace is used for smelting, and some high-demand castings need to be refined;

● Welding repair requirements are high, and welding repair operations need to be carried out before heat treatment;

● Some high-demand steel castings need to be tested for gas content in the steel, and welding repairs are not allowed in key areas.

Automatic Caliper For Braking System (Cast Iron)

Iron castings are generally used in brake cylinder devices and brake caliper devices, such as cylinder blocks, pistons, yokes, levers, hangers and brackets. These iron castings are usually not large, with an average weight of about 20kg.

● The main production methods of iron castings are coated sand casting and water glass lost wax casting;

● 100% full inspection of magnetic particle inspection, high external quality requirements;

● Repair welding is not allowed for casting defects.

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.