Production of copper-alloy bearing retainer by die casting method

A technology of bearing cage and copper alloy, which is applied in the field of mechanical processing, can solve problems such as difficult die-casting of copper alloy bearing cages, and achieve the effects of low cost, good corrosion resistance, and short manufacturing cycle

Inactive Publication Date: 2007-01-17
FAW GROUP +1
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the oil is supplied three times, the small oil cylinder in front is pressurized, and the casting is compacted by the punch to obtain high-quality castings, so this system is called three-stage injection, which is very suitable for die-casting of zinc, aluminum, magnesium and other alloys, but the three-stage injection It is difficult to die-cast a sound copper alloy bearing cage with a high-level injection system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production of copper-alloy bearing retainer by die casting method
  • Production of copper-alloy bearing retainer by die casting method
  • Production of copper-alloy bearing retainer by die casting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: First, the three-stage injection of the die-casting machine, that is, the three-stage pressurization (compacting), is moved forward to the second stage, which is completed at the same time as the second stage, to shorten the injection time, and prevent the alloy from being unable to pressurize after solidification; copper The die-casting brass used for the alloy bearing cage and retaining ring is YT40-1, and its chemical composition is mainly: Cu: 58-63%, Pd: 0.5-1.5%, Al: 0.2-0.5%, and the rest is Zn. Its liquidus temperature is 1083°C, solidus temperature is 1065°C, and its solidification time is very short, about 0.1 second; the flow rate of the hydraulic pump is changed into two large pumps of 80 to 150 liters, and the supply is divided; The specific steps are: after the electromagnet two-position four-way electro-hydraulic valve 4DT is connected, the high-pressure oil coming out of the accumulator is blocked by a special thick piston, so the high-press...

Embodiment 2

[0027] Embodiment 2: First, the three-stage injection of the die-casting machine, that is, the three-stage pressurization (compaction), is moved forward to the second stage, and completed at the same time as the second stage, shortening the injection time, preventing the alloy from being unable to pressurize after solidification; copper The die-casting brass used for the alloy bearing cage and retaining ring is YT40-1, and its chemical composition is mainly: Cu: 58-63%, Pd: 0.5-1.5%, Al: 0.2-0.5%, and the rest is Zn. Its liquidus temperature is 1083°C, solidus line temperature is 1065°C, and the solidification time is very short, about 0.1 second; the flow rate of the hydraulic pump is changed into two large pumps of 80-150 liters, and the supply is divided; The specific steps are: after the electromagnet two-position four-way electro-hydraulic valve 4DT is connected, the high-pressure oil from the accumulator is blocked by a special thick piston, so the high-pressure oil canno...

Embodiment 3

[0030] Embodiment 3: First, the three-stage injection of the die-casting machine, that is, the three-stage pressurization (compacting), is moved forward to the second stage, which is completed at the same time as the second stage, shortening the injection time, and preventing the alloy from being unable to pressurize after solidification; copper The die-casting brass used for the alloy bearing cage and retaining ring is YT40-1, and its chemical composition is mainly: Cu: 58-63%, Pd: 0.5-1.5%, Al: 0.2-0.5%, and the rest is Zn. Its liquidus temperature is 1083°C, solidus temperature is 1065°C, and its solidification time is very short, about 0.1 second; the flow rate of the hydraulic pump is changed into two large pumps of 80 to 150 liters, and the supply is divided; The specific steps are: after the electromagnet two-position four-way electro-hydraulic valve 4DT is connected, the high-pressure oil coming out of the accumulator is blocked by a special thick piston, so the high-pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A technology for manufacturing the bearing holder with copper alloy by die casting method includes such steps as correctly matching and locating 4 pairs of guide post and guide sleeve for moving die and static die, pouring the molten copper alloy in a cup, slowly moving the cup into casting system by press head, quickly pouring the molten alloy in moulding cavity when the stop block of piston rod is in contact with a limit switch, hardening for 8-15 S, and demoulding. Its advantage is no need of finish allowance.

Description

Technical field: [0001] The invention relates to a method for producing a copper alloy bearing cage by a die-casting method, which belongs to the field of mechanical processing. Background technique [0002] Bearings are one of the main basic parts of the machinery industry. The total output of bearings in the world was 898 million sets in the 1960s, 9 billion sets in the 1990s, and more than 12 billion sets at present. About one-third of the current bearings are solid cage bearings. Although the materials of the cage bearings are various, more than 90% are various copper alloys. Its molding process is mainly produced by centrifugal casting and mechanical processing. The specific process is: centrifugal casting (purchasing long copper tube blanks cast by other processes)→rough turning→fine turning→boring→deburring→riveting. There are many traditional processing techniques, and there are 6 processes before and after. The manufacturing cycle is long, and it usually takes 12 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B22D17/04
Inventor 方建儒张瑞卿高敏于荡洲李珍才陈润山刘兴福
Owner FAW GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap