Green cast iron cutting machining method under condition of cooling and lubrication of outer cooling oils on water

Abstract

The invention provides a green cast iron cutting machining method under a condition of cooling and lubrication of outer cooling oils on water. The cast iron cutting machining method comprises the following steps: S1, a workpiece is fixed on a machine tool workbench; S2, an oil-on-water device is started, and nozzles of the oil-on-water device is aligned with a cutter; S3, a cutting speed, a feeding speed and a cutting depth are set according to machining requirements of the workpiece, and the machining machine tool is started to carry out cutting machining on the cast iron workpiece; the nozzles in the S2 comprise a front cutter surface nozzle and a rear cutter surface nozzle, the distance between the front cutter surface nozzle and a cutting edge of the cutter ranges from 20 mm to 80 mm,and the included angle between the front cutter face nozzle and the horizontal direction ranges from 20 degrees to 70 degrees; and the distance between the rear cutter surface nozzle and the cutting edge of the cutter ranges from 20 mm to 80 mm. The cast iron cutting machining method has the advantages of being good in lubricating effect, good in cooling effect and timely in chip removal.

Description

technical field [0001] The invention relates to the field of metal substrate processing, in particular to a green cutting processing method for cast iron under the condition of cooling and lubricating with water droplets attached to an external cooling oil film. Background technique [0002] Cast iron is gradually being widely used due to its excellent tensile strength, fatigue resistance, elastic modulus and wear resistance, as well as excellent casting performance and thermal conductivity. The excellent performance of cast iron ensures that it can maintain sufficient strength at high temperatures. [0003] Graphite in cast iron has a lubricating effect, and the cavities after falling graphite can absorb and store lubricating oil, so that the casting has good wear resistance. In addition, due to the phosphorus eutectic with high hardness in the casting, the anti-wear ability can be further improved, which is of great significance for the preparation of friction parts such ...

AI Technical Summary

Problems solved by technology

In order to solve the problem of poor cooling effect of traditional cutting fluid, low cutting fluid penetration ability, and damage to the environment, technologies such as micro-quantity lubrication technology, low-temperature cold air, liquid nitrogen, and oil film with water droplets are applied to cast iron cutting.

[0005]Minimum Quantity Lubrication Technology is to atomize a small amount of oil into oil mist and spray it into the cutting area under the action of high-pressure gas. Although it can play a good lubrication effect, However, the temperature in the cutting process of cast iron is very high, and it is easy to make the lubricating oil fail at high temperature

Although the low-temperature cold air can play a good cooling effect, but the lubrication effect is relatively poor

Liquid nitrogen requires special equipment for storage, which increases production costs, and the use of liquid nitrogen alone will lack lubrication

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