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Manufacturing Capacity
  • CNC cylindrical grinding machine for processing hydraulic gears

  • Workshop for hydraulic gear pump

  • Bore finishing system

  • Processing valve with CNC drilling center

  • Processing valve with vertical machining center

  • Automatic static pressure moulding line

  • Automatic nickel-chromium plating line for piston rod

  • Automatic nickel-chromium plating line for piston rod

  • Painting line

  • Horizontal processing center for hydraulic pump body

  • CNC grinding machine

  • Workshop for multi-way control valve

  • Horizontal machining center

  • CNC lathe

  • Grinding machine for processing plunger

  • Cylinder barrel shaving machine for hydraulic cylinder

  • Cylinder barrel shaving machine for hydraulic cylinder

1. Valve/Pump Body Casting
a. We adopt the internationally advanced automatic static pressure molding production line and electric furnace smelting technique to improve the quality of castings.
b. Metal mold is used for casting. Besides, we adopt high-quality high-strength pre-coated sand inside the passage of core body to increase the strength and decrease the gas evolution.
c. Exterior of the pump/valve body is casted from shell-shaped workpieces to ensure its beauty.
d. Core of the pump/valve body is coated with custom paint to isolate sand, and to prevent sand from adhering. The castings are then given electric hydraulic sand cleaning and sand blasting treatment, and cleaned with high-pressure compressed air to ensure the finish of casting surface and the purity of the flow channel inside the body.
Contrast between unprocessed and processed valves

CNC milling machine

2. Machining
a. The slide valve hole of the valve body adopts internationally advanced CNC honing machine for hole drilling.
b. The exterior of the valve is processed with imported high-precision grinding machine.
c. The throttling groove of the slide valve is machined by high-speed vertical processing center.
d. High-precision CNC cylindrical grinding machine is employed to guarantee the precision of the shaft and surface of the valve.
e. We use a homemade machine to deburr the gears.

Automatic painting line

3. Finishing and Assembly
a. Deburring and ultra-fine processing is done with homemade machine.
b. The hydraulic valves and pumps are cleaned under the combination of high pressure and ultrasound.
c. A sealed assembly room is used for assembling valves and pumps.
d. The products have to be tested on a digital testbed.
e. The test fluid should be checked regularly to ensure their cleanliness.
f. Sand blasting technique is employed for our products.

Sichuan Changjiang Hydraulic Components Co., Ltd.

Tel.: +86-830-3589306
Fax: +86-830-3580131
Mobile: +86-18683083268
Email: sccjhc@hotmail.com
Skype: zaijianziluolanwh
QQ: 983941156