Wear-resistant and corrosion-resistant gradient coatings of middle trough of scraper conveyor
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A scraper conveyor and gradient coating technology, applied in the field of corrosion-resistant gradient coating and wear-resistant middle groove of scraper conveyor, can solve the problems of uneven wear of the middle plate, easy to fall off, corrosion coating, etc. load-carrying capacity, improved anti-wear properties, low oxide content
Inactive Publication Date: 2020-08-07
UNIV OF JINAN
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[0005] The purpose of the present invention is to provide a wear-resistant and corrosion-resistant gradient coating for the middle groove of the scraper conveyor, which can effectively solve the problems of uneven wear and serious corrosion of the existing middle plate and easy peeling off of the coating to a certain extent, and improve the The wear-resistant and corrosion-resistant performance of the plate prolongs the overall service life of the middle groove and ensures the safe and efficient operation of the scraper conveyor
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Embodiment 1
[0022] A wear-resistant and corrosion-resistant gradient coating material for the middle groove of the scraper conveyor is configured according to the following weight fraction ratio, gradient coating-1: 45%Ni50, 50%Ni60, 2%TiC, 3%WC. Gradient coating-2: 40%Ni50, 45%Ni60, 7%TiC, 8%WC. Gradient coating-3: 35%Ni50, 40%Ni60, 12%TiC, 13%WC.
[0023] The Ni50, Ni60, TiC, WC powders are configured according to the above proportions as composite powders for cladding.
[0024] The composite powder is ball-milled with a planetary ball mill, the ball-to-material ratio is 10:1, and the ball-milling time is 7 hours, so that the composite powder can be mixed evenly and the particles can be refined.
[0025] The composite powder after ball milling was cleaned by a constant temperature ultrasonic cleaning machine, the cleaning medium was absolute ethanol, the cleaning time was 40min, and the temperature was 20°C.
[0026] The cleaned composite powder was dried in a drying oven at a drying ...
Embodiment 2
[0030] A wear-resistant and corrosion-resistant gradient coating material for the middle groove of the scraper conveyor is configured according to the following weight fraction ratio, gradient coating-1: 43%Ni50, 52%Ni60, 1%TiC, 4%WC. Gradient coating-2: 38%Ni50, 47%Ni60, 6%TiC, 9%WC. Gradient coating-3: 33%Ni50, 42%Ni60, 11%TiC, 14%WC.
[0031] The Ni50, Ni60, TiC, WC powders are configured according to the above proportions as composite powders for cladding.
[0032] The composite powder is ball-milled with a planetary ball mill, the ball-to-material ratio is 10:1, and the ball-milling time is 7 hours, so that the composite powder can be mixed evenly and the particles can be refined.
[0033] The composite powder after ball milling was cleaned by a constant temperature ultrasonic cleaning machine, the cleaning medium was absolute ethanol, the cleaning time was 40min, and the temperature was 20°C.
[0034] The cleaned composite powder was dried in a drying oven at a drying ...
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Abstract
The invention relates to wear-resistant and corrosion-resistant gradient coatings of a middle trough of a scraper conveyor. The wear-resistant and corrosion-resistant gradient coatings can effectivelysolve the problems of uneven wear, serious corrosion and easy falling of coatings of an existing middle plate to a certain extent. According to the technical solution, the components of the coatingsare in gradient change, three parts are involved in total, the gradient coatings comprise the following components of, in percentage by weight, 43%-48% of Ni50, 47%-52% of Ni60, 1%-3% of TiC and 2%-4%of WC of a gradient coating-1, 38%-43% of Ni50, 42%-47% of Ni60, 6%-8% of TiC and 7%-9% of WC of a gradient coating-2, and 33%-38% of Ni50, 37%-42% of Ni60, 11%-13% of TiC and 12%-14% of WC of a gradient coating-3. According to the wear-resistant and corrosion-resistant gradient coatings of the middle trough of the scraper conveyor, the wear-resistant and corrosion-resistant gradient coatings have the characteristics of low water absorption rate, good toughness, light weight and the like, and have the main characteristics of wear resistance and corrosion resistance, meanwhile, by controllinggradient change of the components of the coatings, sudden change of structures and the performances among a base body and the coatings is avoided, the bonding condition among interfaces of the coatings are improved, the bearing capacity and the abrasion resistance of the coatings can be further improved, the overall service life of the middle trough can be effectively prolonged, and safe and efficient operation of the scraper conveyor is guaranteed.
Description
technical field [0001] The invention relates to the technical field of the coating of the middle groove of the scraper conveyor, in particular to a wear-resistant and corrosion-resistant gradient coating for the middle groove of the scraper conveyor. Background technique [0002] Coal is the main energy source in our country, and the proven coal content is about 720 billion tons. Comprehensive mechanized coal mining technology (referred to as "mechanized mining technology") is a mining technology commonly used by major coal industry groups. As the main load-bearing and transportation device, the scraper conveyor plays an indispensable and important role in the entire fully mechanized mining face. The middle trough is a key part of the scraper conveyor, and its quality affects the service life of the entire scraper conveyor. During the coal mining process, the scraper and the chain are constantly rubbing against the middle plate, resulting in rapid wear of the middle plate i...
Claims
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Application Information
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