Precision springs

Precision spring is also known as small spring, because this precision spring wire diameter is small, wire diameter 0.06-1.0mm. The design of precision spring production plant 24 hours operation, by the customer service department to provide customers with a full range of services. The existing precision spring production line is composed of the most advanced automation equipment in the world.

Precision spring heat treatment: heat treatment process for thermoforming springs -- forming springs in this way is mostly a combination of heat treatment and thermoforming, while coil springs are mostly heat treatment after thermal forming. The heat treatment method of spring steel is quenching + medium tempering, and the structure after heat treatment is tempered torstenite. This kind of organization has high elastic limit and yield limit, and has certain toughness.

Working conditions, materials and heat treatment requirements

1. Spring with simple shape, small section and little force; Requirements: 65 785-815℃ oil quenching,300℃400℃, 500℃. Temper at 600℃, corresponding hardness HB512, HB430, HB369,75,780-800℃ oil or water quenching,400-420℃ temper, hrc42-48.

2. Large spring with medium load; Requirements: 60Si2MnA 65Mn 870℃ oil quenching,460℃ tempering, hrc40-45 (agricultural machinery seat spring 65Mn quenching and tempering hb280-370)

3. Large plate spring and spiral spring with heavy load, high spring and high fatigue limit; Requirements: 50CrVA, 60SiMnA 860℃ oil quenching,475℃ tempering, hrc40-45

4. Coil spring with a diameter of 8-10mm working under multiple alternating loads; Requirements: 50CrMnA 840-870℃ oil quenching,450-480℃ tempering, hb387-418

5. Helical spring of vehicle and buffer, automobile tensioning spring; Requirements: 55Si2Mn, 60Si2Mn, 60Si2CrA quenching, tempering, hrc40-47 or hb370-441

6. Diesel pump plunger spring, nozzle spring, agricultural diesel engine gas valve spring and valve spring and plate spring of medium and heavy duty vehicles; Requirements: 50CrVA quenching, tempering,HRC40-47

7. Work under the high temperature steam and flat spring coil spring, tap water pipe spring spring and seawater erosion, Φ 10 to 25 mm; Requirements: 3Cr13 hrc39-46 4Cr13 hrc48-50 hrc48-49 hrc47-49 hrc37-40 hrc31-35 hrc33-47