High-acid-resistance and high-corrosion-resistance grease special for sintering machine

Abstract

The invention discloses a high-acid-resistance and high-corrosion-resistance grease special for a sintering machine. The grease is composed of the following components by mass percent: 70-80% of base oil, 18-12% of thickening agent and 12-8% of other addition agents. Methyl phenyl silicone oil and castor-base dioctyl sebacate are compounded and taken as the base oil of the high-acid-resistance and high-corrosion-resistance grease special for the sintering machine; and polyurea is taken as the thickening agent. The obvious advantages of the high-acid-resistance and high-corrosion-resistance grease special for the sintering machine are as follows: each performance index meets use requirements, the grease special for the sintering machine has good high-temperature property, pumping property, sealing property, excellent lubricity and abrasion resistance, low coking tendency and outstanding corrosion resistance, the reliability of a bearing in the sintering machine is improved, the air leakage rate and energy consumption of the sintering machine are reduced, the service life and grease change period of the sintering machine are prolonged, and the grease is suitable for the lubrication and sealing of the sintering machine under high-temperature, high-load and corrosive environments.

Description

technical field [0001] The invention belongs to the lubricating technology of the metallurgical industry, in particular to the field of special grease for sintering machines with high acid resistance and corrosion resistance. Background technique [0002] Iron and steel production is a complex technological process. Sintering is one of the important links in the iron and steel production process. Its function is to mix fine granular or powdered iron ore powder with coke powder, lime, furnace dust, steel rolling skin and steel slag in a certain ratio. Mix evenly, and after sintering treatment, a uniform clinker with high porosity, high strength and good slagging is formed for ironmaking. The sintering process is inseparable from the sintering trolley. The bellows chamber of the trolley is fixed along the sintering slideway, and the swimming plate slides on the slideway under its own weight and spring action; therefore, the fixed sintering slideway and the swimming plate are i...

AI Technical Summary

Problems solved by technology

At the same time, the lubricating greases currently used in sintering machines are mainly traditional soap-based greases such as extreme pressure lithium-based greases, composite aluminum-based greases, ordinary lithium-based greases, or molybdenum disulfide lithium-based greases. Various problems have been brought about: the compound aluminum-based grease becomes thinner under high-temperature conditions, resulting in rapid loss of grease; traditional soap-based lubrication contains metal ions, and it is easy to coke and block pipelines under high-temperature conditions

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