1. Quenching When quenching and heating in a salt bath furnace, the springs should be evenly bundled with iron wires, or the springs should be heated on the mandrel. When heating, ensure that the surface of the spring is oxidized and decarburized. Salt baths should be carefully deoxygenated. It can also be heated in a box-type furnace with a controlled atmosphere. The heating temperature is 850 degree C ± 10 degree C, and the temperature is kept for 1015 minutes, and the quenching oil is cooled through the furnace.
2. Bahorning charchoq kuchini yaxshilash uchun portlatish kerak. Snaryadning diametri 0.30.5mm. Siqilgan havo in'ektsiyasidan foydalanganda siqilgan havo bosimi 0,40,5MPa; sentrifugali portlatish bilan o'qning chiziqli tezligi 70 m / s ni tashkil qiladi. Otishma bilan ishlov berilgan siqish kamonining xizmat qilish muddati ikki baravar ko'p bo'lishi mumkin.
3. Qayta kristallanish tavlanadigan siqish kamonini o'ralgan va hosil qilgandan so'ng, bahorning geometrik o'lchamlarini barqarorlashtirish va söndürme paytida deformatsiyani kamaytirish uchun uni qayta kristallanishi va tavlanishi kerak. Qayta kristallanishning tavlanish harorati 550650 darajani tashkil qiladi va harorat 11,5 soat davomida saqlanadi va keyin havo{4}} sovutiladi. Kichik miqdorni tuzli hammom o'chog'ida o'tkazish mumkin va atmosferani ko'p miqdorda nazorat qilish uchun doimiy qarshilik o'choqidan foydalanish mumkin.
4. Tempering can be carried out twice after tempering and quenching. Correction and tempering should be carried out first. The temperature of correction and tempering should generally be lower than the final tempering temperature by about 20 degree , and the temperature should be kept for 10-15 minutes. The final tempering is then carried out, and after the spring size is corrected, the spring is mounted on the tempering jig for final tempering. The tempering fixture should ensure that the pitch and free length of the spring meet the requirements. The tempering temperature is 420 degree ±10 degree , the temperature is kept for 3035min, and the furnace is water-cooled.
