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In the presence of catalyst, H2O2 can produce a large number of free radicals, improve the ability of oxidation at the same time, improve the efficiency of wastewater treatment, and won't produce sludge, solve the problems of Fenton oxidation.
The phase composition and grain size of ZnO analysed by the D/MAX-ⅢA X-ray diffractometer, with Cu graphite monochromator, working for 40 kv , working current is 30 mA, lambda is 0.15418 nm.

Some scholars established the local contact model of spline shaft in the process of cold rolling forming, and analyzed the metal flow and some nodes’ movement of the deformation area; and then some experiments is carried out, the results show that the spline after cold rolling processing metal organization has not been cut off, grain crushing and refining, dislocation density increases, eventually be drawn into a bar fibrous tissue, metal flow law of the five types of deformation of metal flow is determined by the Law of Minimum Resistance [10,11].
Tab.1 Meshing, Select of material model, Definition of contract condition and boundary conditions Meshing workpiece Mesh type：C3D8RT Number of units：165960 roll-beating wheel Discreteness of rigid body Select of material model workpiece model：J－C model material：40Cr（ Young modulus 211GPa，Poisson ratio 0.277，Density 7870㎏/m3） roll-beating wheel model：Analytical rigid body Definition of contract condition Contract type of the workpiece and the roll-beating wheel： Surface－to－Surface Definition of boundary conditions workpiece Move along the positive direction of x axis, restrain the rest degree of freedom roll-beating wheel Rotate around the axis，the speed is 209.44rad/s（2000r/min) Analysis of the Simulation Result On the basis of finite element model, tooth forming process under one strike is obtained.

To increase their strength, these steels make full use of such measures as grain refinement, solid solution strengthening, precipitation strengthening or dislocation strengthening and so on.
The number of parameters affecting the quality of products is not only so many, but the analysis and control of residual stress is very difficult.

In a real working process the stress wave may be reflected by grain boundaries and rear surface.
Acknowledgments The present work is supported by the Natural High-tech Project of China under grant number 2006AA03Z110).

The small punch tests have been successfully applied in a number of recent studies [9-13] covering zirconium alloy, stainless steels, and aluminium alloys.
Primary α grains (dark), acicular α phase (needle-like) and β phase are evident in the microstructures (Fig. 1 (a)).

Here, io represents the exchange current density; aα , the anodic charge transfer coefficient; z, the charge transfer number; F, Faraday constant; R, the ideal gas constant; T is the temperature.
In our recent work, it is suggested that the ceramic reinforcements prevent the grain growth and the resulting fine microcrystallite enhances the mechanical properties such as yield strength, ultimate tensile strength and elongation.

Studies show that coated carbides offer significant advantages, thus a number of them were used to increase wear rates [2, 3].
Table 1 Tool material compositions Hardness (HRa) Minimum transverse strength (T.R.S) (MPa) Porosity Magnetic Saturation (cm / gram) Magnetic coercivity (KA/m) 91.5~92.8 2750 < A02 B00 C00 120~145 19.0~25.0 Table 2 WC-Co tool material properties Cobalt wt% Other Composition 8~12% Grain Growth inhibitors: ≤ 0.6% VC or Cr3C2 Contaminates: Ni < 0.03%, Fe < 0.03%, no trace of TiC or TaC allowed Cutting tool material.

As the sample heated at 1250℃, the microstructure seemed to become denser, and a large number of crystals are precipitated and distributed evenly, with the shape including columnar, massive and lamellar, ect..
Fabrication of cordierite–mullite ceramic composites with differently shaped mullite grains[J].

Nodes stress distribution of center-surface During quenching, to the total number of heat, the center area takes away the most heat, but the conner areas play a key role to the cooling capacity per unit area.
Inhomogeneities of icrostructures and micro-orientations in cold-rolled high purity Al columnar grains, The Chinese Journal of Nonferrous Metals Vol.15(2005),p.1173

This has created an increase in the number of researchers interested in waste materials.
EDX Analysis of the Grains in Fig. 3 (a.