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Manufacturing method of coppor alloy shaft bushing for large grinding machine

A production method and technology of copper alloy, applied in the direction of shafts and bearings, bearing components, mechanical equipment, etc., can solve problems such as working with diseases, difficulty in replacing bearing bushes, and inability to cast large-diameter bearing bush blanks, etc.

Inactive Publication Date: 2006-04-12
CITIC HEAVY INDUSTRIES CO LTD
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Problems solved by technology

[0003] The bearing alloy bearing pads used in the existing mills are not resistant to high temperature, and their heat-resistant temperature is only between 60°C and 65°C, and the replacement of the bearing pads is difficult and the replacement cycle is long, so it is possible to work with illness for a long time; Cast copper alloy bearings cannot cast large-diameter bearing blanks due to the limitation of centrifugal casting machines; copper alloy bearings cast with sand molds under normal pressure are prone to defects caused by air bubbles and sand inclusions inside the blanks

Method used

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  • Manufacturing method of coppor alloy shaft bushing for large grinding machine
  • Manufacturing method of coppor alloy shaft bushing for large grinding machine

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Embodiment Construction

[0015] When making and processing bearing bushes, choose a hot-rolled aluminum bronze plate with a suitable thickness of QAL9-4, which contains 8.0-10.0% aluminum, 2.0-4.0% iron, 0.01% phosphorus, and 1% zinc. , the rest is copper content; processed to the length and width dimensions suitable for the process requirements; roll the sheet material into a suitable arc size with a plate rolling machine; the fitter checks and repairs the circle of the arc blank by lofting on the platform arc size and torsion, so that it meets the requirements for machining margins; the bearing bush blank (2) is supported and fixed by a supporting device composed of supporting arch beams (1), supporting beams (5) and inclined beams (6), After being clamped and fixed by the splint (3) and the fastening bolt (4), it is sent to the heating furnace for aging treatment to eliminate the internal stress caused by the coiling. The aging temperature is 540°C-560°C and the time is 24h; it is processed by speci...

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Abstract

A technology for manufacturing the Cu-alloy bush used for large grinder includes such steps as providing hot rolled aluminium-bronze plate QAL9-4, rolling to become arc blank, fixing it to special supporter, ageing in heating furnace, fixing it to special die, and machining. Its advantages are high strength and high resistance to high temp, abration and pressing.

Description

Technical field: [0001] The invention relates to the technical field of manufacturing large-scale mill bearing bushes, and relates to a method for manufacturing copper alloy bearing bushes for large-scale mills. Background technique: [0002] At present, in the manufacture of large-scale mill bearings, the bearing materials used are mainly bearing alloys and cast copper alloys. The bearing alloy bearings are cast or surfacing to combine the bearing alloy and the spherical pad body, and then machined. Manufactured; cast copper alloy bearings are made by casting copper alloys into blanks through a centrifugal casting machine or using a casting model under normal pressure and then machining them; generally speaking, bearing alloy bearings and cast copper alloy bearing mill spindles , its diameter can only be about 1.5m. [0003] The bearing alloy bearing pads used in the existing mills are not resistant to high temperature, and their heat-resistant temperature is only between ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/14
Inventor 赵宗立
Owner CITIC HEAVY INDUSTRIES CO LTD
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