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DONGGUAN CHENGCHUANG INDUSTRIAL LIMITED

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Heteromorphic springs, cnc machining

2018/5/22 18:19:02 Viewers:
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Introduction

Our springs workshop is custom OEM Spring machining supplier ,Spring produces custom wire forms manufactured to fit your exact specifications and carries a large inventory of precision-made springs, low price, low cost OEM CNC Machining . CHENGCHUSNG IS China machining for parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.

machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine

Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost

Quality: ISO 9001: 2008 
Control strictly and follow specification 
Move fast to meet your urgent need caused by accident. 
Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements

If you want to know more about springs parts in China, Please contact us.


Common failure of spring type safety valve


1. leakage
Under the normal working pressure of the equipment, leakage occurs between the disc and the sealing surface of the valve seat. The reasons are: there is dirt between the disc and the sealing surface of the valve seat. The valve can be opened several times by using the lifting wrench, and the dirt is washed away; the sealing surface is damaged. According to the degree of damage, it should be repaired by grinding or grinding after turning; the valve stem is bent, tilted or leveraged with the fulcrum, so that the valve core is misplaced with the disc. Should be reassembled or replaced; spring elasticity decreases or loses elasticity. Replacement of springs and adjustment of opening pressure should be taken.
2. valve frequency hopping or vibration
The main reason is that the stiffness of the spring is too large. It is necessary to use the spring with appropriate stiffness, and the adjustment ring is not properly adjusted to make the return seat pressure too high. The position of the adjusting ring should be adjusted again, and the resistance of the discharge pipe is too large, resulting in excessive discharge backpressure. The discharge pipe resistance should be reduced.
3. not open when the pressure is specified
The reason for this is that the pressure is not accurate. The compression amount of the spring or the position of the heavy hammer should be re adjusted, and the disc should be stuck to the valve seat.  The safety valve should be manually released or tested on a regular basis; the lever of the lever type safety valve is jammed or the heavy hammer is moved. The position of the hammer and the movement of the lever should be re adjusted.
No back seat of valve after 4. discharge
This is mainly due to the spring bending stem, the incorrect installation position of the disc or jammed. It should be reassembled.
5. the pressure continues to rise after the exhaust
This is mainly due to the selection of the safety valve for the safety relief of Xiaoping equipment. The appropriate safety valve should be reselected; the middle line of the valve stem is not correct or the spring is rusty, so that the valve can not reach the due height. The valve stem should be reassembled or the spring should be replaced; the exhaust pipe is not enough to pick up the exhaust pipe which meets the safe discharge area.
6. does not reach the prescribed pressure
The main reason is the constant pressure is not allowed; the spring aging elasticity decreases. Adjust the screw or replace the spring properly.

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