GCr15 bearing ring mesh belt furnace quenching brightness analysis

GCr15 bearing ring mesh belt furnace quenching brightness analysis - 2020 05 - 15 wang tao, due to the factors influencing the ferrule quenching of light is more, when we encountered such a problem, had better use method: namely to authenticate to verify project factors immediately, if qualified, regardless of the factors; If not qualified, the immediate improvement, until qualified. Item by item so the exclusion or rectification, which is beneficial to quickly find the real reason and solution. Heat treatment production conditions and different bearing manufacturer ring light condition 1. Examples of A lack of carbon potential manufacturer the main operating mode as shown in the table above, A production for the first time sex, light is shown in figure 1. To solve the problem, affecting the light to troubleshoot the cause of improvement, the main measures include: ( 1) Sample test purity of methanol, water cut 0. 1%, the qualified. （ 2) The test of the quenching oil. （ 3) Adjust the mood, to set the carbon potential of the chamber of a stove or furnace from 0. 45% to 0. 52%, parts color has improved markedly, the typical image is shown in figure 2. Manufacturer of figure 1 A after quenching parts ( Adjust the process before) Figure 2 A manufacturer after quenching parts ( After adjusting process) 2. Instance main working condition of quenching oil feed manufacturer B B as shown in the table above, production for the first time the light of poor. To solve the problem, affecting the light to troubleshoot the cause of improvement, the main measures include: ( 1) Adjust atmosphere generator: methanol using air pump before playing way, bubbled into the chamber of a stove or furnace to drip, color better, but it is not uniform; （ 2) Check the quenching oil: the detection of quenching oil moisture content exceeds bid, Standard & le; 0. 06%) , to 0. 1%. By trying to find the reason of the water for the parts fall into splashing when cleaning tank cleaning fluid after quenching after quenching in the ascension of the baffle into the quenching tank under network, after heating, water treatment. （ 3) Results: after the above two measures, ring quenching light up to the manufacturer's technical requirements, to achieve the goal of heat treatment was relieved after shot blasting process, the parts as shown in figure 3. Manufacturer of figure 3 B after quenching parts ( After quenching oil in addition to water and atmosphere adjustment) 3. Instance C main working condition of lack of quenching oil fume control manufacturer C as shown in the table above, production for the first time the light of poor. To solve the problem, affecting the light to troubleshoot the cause of improvement, the main measures include: ( 1) Check the quenching oil: each performance index is normal. （ 2) Screening oil shade: adjust the oil light curtain size have obvious change, and change rule exceptions: open shade poor light oil, oil closed curtain light instead of sex. So the main reason for the problem determination for quenching lampblack not good control. （ 3) Results: manufacturer C communication with the equipment manufacturer, the furnace after the oil shade and hopper device removal renovation, and increase the platoon lampblack device, light after reinstalling production to a better degree, to meet the technical requirements, the parts as shown in figure 4. Manufacturer of figure 4 C after quenching parts ( Oil shade and smoke lampblack device after renovation) （ Source: heat treatment ecosystem)