Luoyang Hengin Heavy Technology Co., Ltd.

Luoyang Hengin Heavy Technology Co., Ltd.

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Copper Bearing Bush Machining
   

1.High Content Lead-Copper Alloy  Bearing Bush

2.Copper Alloy Spherical Pad

3.Machining of Copper Alloy Bearing Bush for Special Fixtures

4.Φ3.6m Ball Mill Copper Alloy  Bearing Bush
 


■ Casting of Large Copper Alloy Bearing Bush

◆ Sand Casting of Large Copper Alloy Bearing Bush
Aluminum bronze and tin bronze are the basic material requirements for sand casting of large-scale copper alloy bearing bush. In the process design, a series of strict technological measures are adopted, such as the pouring system as the bottom rain pouring system closed first and then opened, the internal and external cold iron cooperating with the riser itself, the high temperature copper water backflushing riser feeding the casting, etc. Quality.
◆ Centrifugal casting
Centrifugal casting uses centrifugal force to reduce the gas content, shrinkage, shrinkage and other casting defects, reduce the composition segregation, and make the structure more compact.

■ Machining of 4 Large Copper Alloy Bearings

◆ Processing Technology and Standards
(1) Processing Difficulties of Copper Alloy Bearing
Round casting is adopted in the blank, and the copper alloy bearing bush is divided into two parts (120 degree and 180 degree). It is necessary to cut the workpiece in processing. Therefore, the choice of cutting time is the key to formulate the manufacturing process plan of the copper alloy bearing bush.
(2) Deformation control: Because the copper alloy bearing bush belongs to large diameter and thin-walled split parts, its rigidity is poor, so it is difficult to control the stress and deformation, the final dimension tolerance and the shape and position tolerance of the parts in the manufacturing process.
(3) The inner roughness Ra = 0.8, the end and outer roughness Ra = 1.6, and the other surface roughness Ra = 3.2.
◆ Overall process plan
(1)Round casting roughing →cutting semi-finishing→ finishing. The rationality of the scheme is verified by its application in similar products.
(2) By adopting a series of technological measures, such as WEDM, positioning pin combination processing and semi-precision and finish processing, the deformation of the workpiece is effectively controlled.
 
 
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