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WHAT WE OFFER

A professional manufacturing
enterprise casting and machining

  • Casting Parts

    The whole process of shell casting and precision machining

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  • Forged Parts

    This product is precisely forged from high-quality materials such as 42CrMo alloy steel and titanium alloy using advanced die forging technology.

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  • Die Cast Parts

    Casting parts are metal products with specific shapes and structures formed by pouring, cooling, and solidifying molten metal.

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  • Cnc Machining Parts

    Forged parts are workpieces that are plastically deformed under external forces to obtain specific shapes and properties.

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  • Metal Fabrication Parts

    Die-cast parts are a type of metal product formed by rapidly injecting molten metal into a metal mold under high pressure.

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  • Bus/Subway Parts

    CNC machined parts are precision components made by computer numerical control machine tools through automated cutting, drilling, milling, turning, and other processing methods on metal or non-metal materials.

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WHY CHOOSE US

Adhere to technology
upgrade and process innovation

NingBo YinZhou ChengEn Machinery CO.,Ltd.

One-Stop Service

Covering the entire process of casting and precision machining, it efficiently connects from raw materials to finished products.

NingBo YinZhou ChengEn Machinery CO.,Ltd.

Scale and Capacity

There are currently 140 employees, among whom 12 are professional and technical personnel. The annual output of castings reaches 900 tons.

NingBo YinZhou ChengEn Machinery CO.,Ltd.

Multiple Application Fields

The products are widely applied in industries such as building hardware, auto parts, mechanical equipment, and rail transit.

ABOUT US

Based in Ningbo,
serving the world

As

China investment castings manufacturers and OEM/ODM lost wax casting parts factory

, Ningbo Chengen Machinery Co., Ltd. was established in 2008. It is a professional manufacturing enterprise integrating casting and machining, committed to providing customers with high-quality one-stop solutions. The company is located in Jiangshan Town, Yinzhou District, Ningbo City. It has a modern production base of 12,000 square meters, equipped with advanced production equipment and a professional technical team. It has won wide recognition in the market with its excellent manufacturing capabilities and rigorous quality control.
NingBo YinZhou ChengEn Machinery CO.,Ltd.

HOT PRODUCTS

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SERVICE INDUSTRY

A wide range of industries

NingBo YinZhou ChengEn Machinery CO.,Ltd.

Building Hardware

NingBo YinZhou ChengEn Machinery CO.,Ltd.

Automobile Parts

NingBo YinZhou ChengEn Machinery CO.,Ltd.

Mechanical Equipment

NingBo YinZhou ChengEn Machinery CO.,Ltd.

Rail Traffic

HOW IT WORKS

Mastering the Leading Technology

  • NingBo YinZhou ChengEn Machinery CO.,Ltd.
    Prepare suitable raw materials according to the material type and specifications of the shaft to be forged. Commonly used materials include steel, aluminum alloy or other alloys. • Ensure the quality and purity of the raw materials, and avoid using materials containing impurities or defects.

    1. Raw Material Preparation

  • NingBo YinZhou ChengEn Machinery CO.,Ltd.
    Make a die that meets the requirements according to the design drawings and actual needs. • The design and manufacture of the die must be precise to ensure that the metal billet flows smoothly in the die and avoid defects such as folding and cracking.

    2. Die Preparation

  • NingBo YinZhou ChengEn Machinery CO.,Ltd.
    Heat the metal billet to a suitable temperature for forging. • Control the temperature and heating time during heating to avoid undesirable phenomena such as overburning and oxidation of the metal.

    3. Heating

  • NingBo YinZhou ChengEn Machinery CO.,Ltd.
    Use suitable forging equipment to repeatedly hammer, squeeze and twist the metal billet to gradually form the required shape and size. • Temperature and deformation should be strictly controlled during forging to avoid defects such as overheating and cracks. • Forging methods can be divided into free forging, upsetting, extrusion, die forging, etc. according to the movement method of the blank.

    4. Forging

  • NingBo YinZhou ChengEn Machinery CO.,Ltd.
     After forging, the shaft forging needs to be cooled. • Choose appropriate cooling methods, such as air cooling, water cooling, etc., to avoid deformation or cracking caused by excessive local temperature differences. • Straighten some shaft forgings to eliminate stress concentration and correct the shape.

    5. Cooling and Straightening

  • NingBo YinZhou ChengEn Machinery CO.,Ltd.
    Perform strict quality inspection on each shaft forging, including appearance inspection, dimensional inspection, non-destructive inspection, etc. • Ensure that the shaft forgings meet the design and use requirements. • Accept the finished products of qualified shaft forgings and keep records; unqualified shaft forgings are repaired or scrapped.

    6、Quality Inspection and Finished Product Acceptance

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