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. Letupan pukulan diperlukan untuk meningkatkan kekuatan keletihan spring. Diameter peluru ialah 0.30.5mm. Apabila menggunakan suntikan udara termampat, tekanan udara termampat ialah 0.40.5MPa; dengan letupan pukulan emparan, halaju linear peluru ialah 70m/s. Hayat perkhidmatan spring mampatan yang dirawat dengan letupan tembakan boleh menjadi lebih daripada dua kali ganda.
3. Selepas spring mampatan penyepuhlindapan penghabluran semula digulung dan dibentuk, ia mesti dihablurkan semula dan disepuhlindapkan untuk menstabilkan dimensi geometri spring dan mengurangkan ubah bentuk semasa pelindapkejutan. Suhu penyepuhlindapan penghabluran semula ialah 550650 darjah , dan suhu disimpan selama 11.5j dan kemudian disejukkan-udara. Sebilangan kecil boleh dijalankan dalam relau mandi garam, dan relau rintangan berterusan boleh digunakan untuk mengawal atmosfera dalam kuantiti yang banyak.
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.
