The finite element method was used to analyse the needle gear which is used as plug before and after installing load balance ring,and the stress and straine were compared.

In order to solve the problem of crack deformation tendency of the quenched steel wires for a uniform structure,development is done to the special wire of hi-carbon and low alloy,finding that there is variation of spheroidizing annealing processed structure under the same spheroidizing annealing process once drawed.

Highlight is given to the difference of the heattreatment process and wire point hardness of the card clothing.

Integrated with the production,the analysis is done to the requirement of the trade standard on the clothing wires and wire property.

Along with the fabrication features of clothing process and the requirment from the mills,some specification or index are exposed public on both the clothing wires and top special weirs.

Through analysis of the change of the specifications of the clothing wires made of alloy steel before or after the tempering process,the paper puts forth that installation of tempering device after the punching and quenching process is helpful to better quality of clothing wires, improving the color difference of clothing and prolong the service life of clothing.