Preparation method of ceramic ring

Abstract

The invention belongs to the technical field of preparation of new-material rings, and relates to a preparation method of a ceramic ring. The preparation method comprises the technology process with the following steps of slurry preparation, blank forming and microwave sintering. The high-density, uniform and dense ceramic ring is prepared from the slurry with high solid phase content and good fluidity through net size liquid casting in-situ condensing forming and microwave sintering, the density is 6.02g / cm<3>, the hardness is 12.23GPa, the bending strength is 896.86MPa, and the breaking toughness is 11.36Mpaml / 2. The preparation method has the advantages that the metal ring in the prior art is completely replaced; after sintering, the ceramic ring can be used by as long as the surface is polished, so that the grinding procedure after sintering is avoided; the abrasion-resistant property, size stability, self-lubricating property and polishing property are good, the friction coefficient is small, and the ceramic ring is used for replacing the alloy ring in the yarn production; the principle is scientific and reasonable, the operability is strong, the energy consumption is low, the investment is small, the rate of finished yarns is high, the preparation cost is low, the environment-friendly effect in use is realized, and the good industrial application prospect is realized.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of preparation of new material steel rings, and relates to a method for preparing ceramic steel rings. The special ceramic steel rings with high hardness, wear resistance and low cost are prepared to replace the metal rings in the prior art. [0003] Background technique: [0004] The steel ring is the key component for twisting and winding the yarn of the ring spinning machine. Its performance determines whether the spinning can be carried out smoothly, affects the yarn breakage and yarn hairiness, and is also related to the production cost. ; China is a big textile country, with about 80 million ring spinning machine spindles, ranking first in the world. The "ring" of the ring spinning machine refers to the steel ring. The material of the steel ring is 20 steel, which has been infiltrated by C-N Finally, most are sold in the form of polished surfaces; chrome-plated steel rings, electrolytic sulfuriz...

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Problems solved by technology

[0004] The steel ring is the key component for twisting and winding the yarn of the ring spinning machine. Its performance determines whether the spinning can be carried out smoothly, affects the yarn breakage and yarn hairiness, and is also related to the production cost. ; China is a big textile country, with about 80 million ring spinning machine spindles, ranking first in the world. The "ring" of the ring spinning machine refers to the steel ring. The material of the steel ring is 20 steel, which has been infiltrated by C-N Finally, most are sold in the form of polished surfaces; chrome-plated steel rings, electrolytic sulfurization, ion-plated sulfur-plated matte self-lubricating steel rings, plated or coated with Ni—P, MoS:, fluorine plating, diamond-like coatings, black gemstones The steel rings are all surface treated on 20 steel steel to improve their hardness and lubricity to meet the needs of textile mills; in the domestic existing technology, on the basis of carburizing, carbonitriding, nitriding and Multi-component co-infiltration and other methods improve the anti-adhesion and anti-fatigue ability of the steel ring, so that it has better wear resistance and longer service life, but the electrolyte is easy to age, high cost, unstable quality and environmental pollution problems ; and the powder metallurgy sintered steel ring made of iron-based powder sintering has good self-lubrication after oil immersion, and has the characteristics of high strength, high density and high precision, but its metallurgical micropores are easy to block, and the lubricating oil is easy to pollute during use Yarn; when the chrome-plated steel ring is processed by electroplating, the current density of the inner and outer rings of the steel ring is uneven, resulting in a large difference in the thickness of the coating, the inner track is the main supporting surface, and the amount of wear is large. Long, the traveler is easy to wear, resulting in poor yarn quality

In the existing foreign technology, chemical vapor deposition (CVD) TiC is used to treat the steel ring, and a very thin layer of simple substance or compound with special properties is coated on the surface of the workpiece. The steel ring treated with (CVD) TiC has high hardness and friction coefficient. Small, with a service life of up to four years, but its one-time investment is too large, the processing technology is more complicated, and the product price is high, so it is difficult to meet the needs of the domestic market.

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