No matter what the springs product, its production process will be such a problem, the winding spring is the case, or large or small, more or less, but for some mature technology, experienced manufacturers, the big problem is basically Is able to put an end to, but some common small problems is not so easy to avoid, and we are a professional manufacturer of the clock, today to take you to see the spring in the production process of some common problems and solutions.
1, the production process temperature overheating produce grain coarse, brittle increase. Solution: according to the correct temperature of the process test heat quenching; appropriate to reduce the heat forming temperature or to strengthen the calibration of the instrument to ensure accurate temperature measurement.
2, high thermal temperature or quenching medium cooling capacity is too large, it may cause cracking, surface decarburization and tempering is not timely. Solution: with isothermal quenching or martensitic grading quenching; quenching medium in the cold to 250 ~ 300 º C out of air cooling; quenched immediately after.
3, if the air furnace heating and quenching without protective gas or salt bath deoxidation is not complete, it may produce decarburization, the solution: air furnace heating quenching should be protected gas or drops of organic solution protection: salt bath heating, salt bath Should be deoxidized, impurity BAO mass fraction less than 0.2%; strengthen the quality of raw materials to check.4, if the hardness after quenching, will make the spring life of the spring, the residual deformation. Solution: the use of good hardenability of steel, to improve the cooling capacity of quenching medium, winding spring into the quenching medium temperature should be above AR3, the appropriate increase in quenching heating temperature, strengthen the quenching after the microstructure test.