Bearing steel ball special continuous heat treatment roller type production line and process

Abstract

The invention relates to a bearing steel ball special continuous heat treatment roller type production line and process. The production line comprises a drying device, a drum type heating furnace, a steel ball blank quenching system, a cleaning machine and a tempering furnace, wherein the drum type heating furnace comprises a furnace body, a drum, a spiral flow guide part, a heating assembly and adriving assembly, wherein the feed end is located at one end of the furnace body; steel ball blanks are fed to the feed end of the spiral flow guide part through a spiral feeder; the discharge end islocated at the other end of the furnace body and communicates with the discharge end of the spiral flow guide part; the cleaning machine comprises a rack, a cleaning tank, an oil-water separator, a circulating system used for circulating separated water to the cleaning tank, a conveying system, a first oscillator, a second oscillator, a heater and a temperature controller; the temperature controller controls the temperature of cleaning fluid in the cleaning tank to 45+ / -5 DEG C. Through the bearing steel ball special continuous heat treatment roller type production line, on one hand, the output is increased, and the quality is stable on the premise of implementing continuous heat treatment on steel balls; and on the other hand, the phenomena of ball adhering and ball mixing are avoided, and the cleaning effect can also be improved.

Description

technical field [0001] The invention belongs to the field of heat treatment of bearing steel ball blanks, in particular to a special continuous heat treatment drum-type production line for bearing steel balls, and also relates to a heat treatment process for bearing steel ball blanks. Background technique [0002] With the improvement of the steel ball blank manufacturing process and the research and development of equipment, the current process flow is as follows: raw material (bar)-cold heading-light ball-heat treatment-hard grinding-primary research-finishing-superfinishing-optical appearance - Cleaning and anti-rust - Finished product inspection - Packaging. Among them, cold heading is to process the rod-shaped material into a blank through a steel ball blank cold heading machine; the light ball stage is used to unify the dimensional tolerance after the cold heading stage, and grind off the ring belt and two poles of the ball blank, and this stage is basically spherical;...

AI Technical Summary

Problems solved by technology

[0004] 1) Since it is a periodic operation (that is, after one batch of processing is completed, the next batch is processed), the steel balls cannot be continuously produced and processed, which reduces the forming efficiency of the steel balls and the output is small;

[0005] 2) The quality of heat treatment is unstable, and there are great differences in the internal structure of steel balls. Therefore, the pass rate is very low, resulting in high manufacturing costs of steel balls

[0007] 1. At the discharge end of the oil tank and cleaning machine, some residual oil and water inevitably exist. Because the tiny steel ball blanks are light in weight, they are easy to bond with the residual water and oil, resulting in sticky balls and mixed balls. It brings inconvenience to the continuous production of steel ball blanks;

[0008] 2. The cleaning solution at room temperature is difficult to remove the grease on the surface of the steel ball blank (the principle is the same as washing dishes with cold water)

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