valve spring manufacturing process

A method of manufacturing a high strength valve spring for a vehicle engine is provided, which includes (a) forming a high strength wire rod in the form of a spring using a roller type jig, (b) cutting an end of the formed spring using a rotary type cutting blade, (c) performing residual stress removal heat treatment at 390° C. to 410° C. for 20 to 40 minutes, (d) performing shot peening for

To ensure high performance, we manufacture valve springs using only the best materials. We have experience creating springs using high-carbon steel, silicon, stainless, galvanized, square wire, round wire, hard drawn wire and music wire between .080 and .625 inches in diameter.

later in the valve spring manufacturing process, this tem- perature may be decreased. Hot presetting. After shot peening, the springs should be hot preset 

The function of an internal combustion engine valve spring is to provide sufficient force throughout the engine cycle to maintain the tappet in contact with the cam at all speeds within the engine speed range. However, it must not exert such force that will produce unacceptable contact stresses between tappet and cam.

1. The complex valve blank manufacturing and inspection process. Valve castings are formed by heating metals to thousands of degrees Fahrenheit, at which point they melt into liquids. The liquid metals are poured into molds, where they cool and take the shape of a specified valve. Valve cast blanks are structurally complex, thin-walled shell parts.

valve springs is required to be smaller in diameter and higher in strength. The general manufacturing process from steel wire to springs is shown in Fig 

26/03/  · Sources:LEARN AND GROW - Wire Drawing Process(Parts And Working): https://www.youtube.com/watch?v=pd4Uk8vk09cPedders Suspension - Spring Manufacturing Plant:

according to another aspect of the present invention, this object is accomplished by providing a manufacturing method of a valve spring, comprising the steps of applying nitriding treatment to a

Discussed below are the two common methods of how valves are manufactured. #1: Cast Method The cast method can be summed up by looking at the illustration below. Note that this is not the complete process. Body An initial pre-shaped material cleaned. A turning process is done after cleaning.

In a manufacturing method of a valve spring, a coiled valve spring made of an oil-tempered wire is applied with nitriding treatment and is supported to be rotated about its center axis. During a

Spiral springs for variable valve timing system. Our company's unique patented manufacturing method that meets the needs of our generation.