Minimum quantity lubrication cooling system and lubrication cooling method during copper tube drawing

Abstract

The invention discloses a minimum quantity lubrication cooling system. The system includes: a minimum quantity lubrication cooling controller, wherein the minimum quantity lubrication cooling controller comprises a gas feeding tube for connecting with a high pressure gas to drive, and a first minimum quantity oil gas nozzle and a second minimum quantity oil gas nozzle which are respectively connected with the minimum quantity lubrication cooling controller; a spinning mechanism having a tensile throat with the opening open to one side, wherein the outlet direction of the first minimum quantity oil gas nozzle aligns with the tensile mouth; and a reducing die positioned at one side or both sides of the spinning mechanism, wherein the reducing die has a tapered mouth, the outlet direction of the second minimum quantity oil gas nozzle aligns with the above conical mouth. The invention also provides a lubrication cooling method during copper tube drawing. The method comprises the following steps: providing the minimum quantity lubrication cooling system, and arranging the minimum quantity lubrication cooling system on the table of a stretching device; and connecting a compressed air tube into the minimum quantity lubrication cooling system to provide power.

Description

【Technical field】 [0001] The invention relates to a method for lubricating and cooling copper pipes during drawing, which is applied to the lubricating and cooling process of drawing copper pipes in industries such as air conditioners, refrigerators, electric wires and cables, and electronics; [0002] The present invention also provides a system device for realizing the above method, specifically a minimal quantity lubrication cooling system. 【Background technique】 [0003] According to the patent search and market survey, the following lubricating and cooling methods are used for copper tube drawing: when the copper tube is drawn through the disc, due to its high speed and large deformation, it is necessary to use lubricating oil with high viscosity and thick oil film. It can meet the needs of drawing, and after a certain period of use of this kind of lubricating oil, the molecular chain in the oil is cut, which leads to lubrication failure and needs to be replaced, and w...

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Problems solved by technology

[0003] According to the patent search and market survey, the following lubricating and cooling methods are used for copper tube drawing: when the copper tube is drawn through the disc, due to its high speed and large deformation, it is necessary to use lubricating oil with high viscosity and thick oil film. It can meet the needs of drawing, and after a certain period of use of this kind of lubricating oil, the molecular chain in the oil is cut off, which leads to lubrication failure and needs to be replaced, and waste oil needs to be disposed of

Due to the high viscosity of the lubricating oil, the cooling effect is poor, resulting in increased wear of the mold and stretching equipment during stretching! On the other hand, due to the thick oil film remaining on the surface of the finished product, metal cleaning agents need to be used for surface cleaning treatment in the later stage, which will generate a large amount of waste liquid that needs to be treated, and there is a risk of environmental pollution.

[0004] Due to the large amount of processing in the spinning and drawing stage of the internal threaded copper pipe, the heat generated is relatively large. The existing method is to use lubricating oil of a certain viscosity to spray lubricating and cooling in a closed cavity, and a cooler is connected outside to return the oil. Cooling down requires high energy consumption; at the same time, after a certain period of use of this type of lubricating oil, the molecular chain in the oil is cut, resulting in lubrication failure and needs to be replaced, and waste oil needs to be disposed of

Similarly, the lubricating oil remaining on the surface of the finished product needs to use a large amount of metal cleaning agent for surface treatment, resulting in a large amount of waste liquid and the risk of pollution.

Therefore, copper tube spinning and drawing has become a bottleneck process in product processing and production, and has always been a difficult process that affects production and cannot be improved.

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