CN102513776A - Repair method for chain wheel of scraper conveyor - Google Patents

Abstract

The invention discloses a repair method for a chain wheel of a scraper conveyor, which belongs to the technical field of conveyor chain wheel repair. The repair method includes the steps: grinding positions of gear teeth needing surfacing by the aid of an angle grinder until metallic gloss appears; a sample plate for repair is made according to complete gear teeth of the chain wheel; using an FW-4101 type wear-resistant electrode as a surfacing transition layer and using an FW-4102 type wear-resistant electrode as a surfacing wear-resistant layer to achieve a complete shape; and grinding a surfacing surface by the aid of the angle grinder and correcting the surface by the aid of the sample plate obtained in the step B until a chain can pass through the chain wheel. The transition layer and the wear-resistant layer are surfaced on the surface of an invalid chain wheel to function in wear reduction and impact resistance, and the service life of the chain wheel can be effectively prolonged.

Description

A kind of restorative procedure of scraper conveyer chain wheel

Technical field

The present invention relates to a kind of restorative procedure of mine flight conveyer sprocket wheel, belong to conveyor sprocket recovery technique field.

Background technology

Drag conveyor is that use is the widest in the coal enterprise, one of equipment that the wear-out failure inefficacy is the most serious.It is the main haulage conveyor tool of fully-mechanized mining working, machine mining face, gateway and coal washery, ground.The sprocket wheel of drag conveyor bears the violent friction of chain in running, wherein sprocket teeth is the maximum parts of wear extent.The inefficacy of sprocket wheel, also many excessive wears by the gear teeth cause that therefore, the gear teeth should have enough impact resistances and wearability.

Summary of the invention

The objective of the invention is to overcome and change the high shortcoming of sprocket wheel cost, adopt technique for overlaying, the sprocket wheel that a kind of operation is simple, crudy is high repair process is provided on the surface of inefficacy sprocket wheel.

The restorative procedure of a kind of scraper conveyer chain wheel of the present invention is to adopt technique for overlaying, specifically may further comprise the steps:

A, cleaning inspection need the position of built-up welding with the cornea machine gear teeth of polishing, up to spilling metallic luster;

B, make repairing by complete sprocket teeth and use model;

C, select for use FW-4101 type wear resistance electrode to need the position built-up welding transition zone of built-up welding, select FW-4102 type wear resistance electrode build-up wear-resistant layer to complete shape on transition zone for use in steps A.The built-up welding condition of this step is conventional technology contents.

D, with the surface of cornea machine polishing built-up welding, with the calibration of step B gained model, can pass through up to chain.

The technical scheme built-up welding sprocket teeth that the present invention adopts has low, easy to operate, the wear-resisting characteristics such as effective of cost, and the sprocket teeth hardness after the reparation is 55～58HRC.Evidence, through the improvement of above-mentioned technology, improved more than 1 times the service life of sprocket wheel.The present invention is surface overlaying transition zone and the wearing layer at the inefficacy sprocket wheel, plays anti-attrition and shock proof effect, can effectively prolong the service life of sprocket wheel.

The specific embodiment

To combine embodiment that the present invention is done further detailed description below.

Embodiment 1:

The first step, the matrix pre-treatment

After the clean, need the position of built-up welding, eliminate up to iron rust and expose metallic luster with the cornea machine polishing gear teeth;

Second step, the preparation transition zone

Get the FW-4101 silk material 1Kg that Beijing University of Technology produces, under first group of bead-welding technology condition, make transition zone first matrix, set welding current 90～110A, voltage is 20～18V.

The 3rd step, the preparation wearing layer

Get the FW-4102 silk material 1Kg that Beijing University of Technology produces, under second group of bead-welding technology condition, make transition zone second matrix, set welding current 90～110A, voltage is 20～18V.

In the 4th step, the surface is detected

The gear teeth that the 3rd step was made carry out the surface detection, and flawless and pore are answered in the surface, and coating is even.Use the model calibration, can pass through up to chain.Sprocket teeth hardness after the reparation is 55～58HRC.

Claims (1)

1. the restorative procedure of a scraper conveyer chain wheel is characterized in that, adopts technique for overlaying, specifically may further comprise the steps:

A, cleaning inspection need the position of built-up welding with the cornea machine gear teeth of polishing, up to spilling metallic luster;

B, make repairing by complete sprocket teeth and use model;

C, select for use FW-4101 type wear resistance electrode, select for use FW-4102 type wear resistance electrode as build-up wear-resistant layer to complete shape as the built-up welding transition zone;

D, with the surface of cornea machine polishing built-up welding, with the calibration of step B gained model, can pass through up to chain.