Technical field:
The invention belongs to the technical field of metal processing, and particularly relates to a special lubricant for the rolling process of nonferrous metals.
Background art:
The rolling of nonferrous metals needs lubricants, especially titanium tubes. At present, the general molybdenum disulfide lubricant can ensure the quality of rolled titanium pipes, but it has the following disadvantages: 1, the purchase price is expensive, about 60 thousand yuan/ton; 2. The viscosity of the product is not enough. When in use, workers must add molybdenum disulfide powder chlorinated paraffin under the condition of manual stirring, which brings inconvenience to use; 3. Adding molybdenum disulfide powder and chlorinated paraffin wax increases the use cost, and the lubricant price is increased to more than 70,000 yuan/ton on the basis of purchasing; 4, the use of a large number of molybdenum disulfide will produce a large number of pollutants in the subsequent process. The pipeline pickling process uses 6-8% hydrofluoric acid and 40-45% nitric acid solution. After the pipes are put into the pickling tank, a large amount of reddish-brown nitrogen oxide gas will be produced, which will cause environmental pollution and air pollution in the workshop and do harm to the environment and the health of front-line workers. Pickling will discharge a certain amount of acid-containing wastewater and pollute the water environment. Due to the continuous expansion of production scale, the restriction of environmental protection on pollutant discharge during production and the influence on the physical and mental health of front-line workers.