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These functions include anti-seizure and anti-wear properties as well as the reduction of friction during the metal forming process [12].
An alternative to coating the tooling to improve its wear properties and tribological factors in the metal forming process is to change the way the tooling itself functions.
Finite element analysis Finite element analysis was performed in order to better understand the important factors in the extrusion process.
The work-piece was meshed with about 2500 elements, and had material properties defined by the power law.
"Formulation and Testing of Optimised Coating Properties with Regard to Tribological Performance in Cold Forging and Fine Blanking Applications." 

The starch is a semi-crystallize property polymer, under the polarizing microscope observation, they present to cross-cross.
The porous starch is made by the physical method, mechanical method or biological method, through making starch granules to be holes starch from surface to internal, like hornet’nest[2].
Fig.3 Effective of reaction pH on the oil adsorption rate of porous starch Reaction temperature in the influence of oil absorption rate The figure 4 shows that while other factors are not changed, different temperature has significantly different influence in the porous starch oil absorption.
Fig 8 Effective of reaction Starch concentration on the oil adsorption rate of porous starch Orthogonal experiment In starch concentration 30% of conditions, through the intuitive analysis found that: oil absorption rate for A2B2C2D2E2F2G2, the best combination of factors of primary and secondary for: A>E>G>D>B>F>C.
Based on single factors research, optimize the corn starch preparation process conditions.

The interaction between zeolite crystals and substrates affects the properties of the obtained membranes.
By controlling the properties of the zeolite membranes with respect to the orientation and compactness of the crystals, high applicability in numerous fields is expected.
The initial composition, elaboration conditions and the properties of the ceramic supports used for the obtaining of the silicalite membranes are summarized in Table 1.
The initial composition, elaboration conditions and the properties of the ceramic supports used for the obtaining of the silicalite membranes.
The results of this study indicate the role of the crystal formation by controlling the conditions of the hydrothermal treatment and also that the structure of the zeolites is influenced by factors as structure of the support and reaction conditions.

From the analysis of the experimental data obtained it has resulted that the use of ultrasound for martensitic quenching of these steels ensures changes to the properties favorable to elements of ball bearings and may represent an effective way of increasing the quality of bearings; the technology is relatively simple, it does not require substantial constructive changes in the quenching machines and no further investment of large values.
These are all factors that influence to a large extent the operating behaviour of the bearing.
The stand is based on tribological model ball-torus (Fig. 2), existent at the Faculty of Mechanical, Mechatronics and Management from the “Stefan cel Mare” University of Suceava, and it has been used to test bearings 51207.
Dimensional changes in time of the bearing elements determine changes in assembly and adjustment and they sensibly affect the bearing’s behaviour in service in use.
In the reliability of industrial products, the Weibull law of distribution is presented in the form of a function of three parameters g, h and b, known under the names of location factor (g), scale factor (h) and form factor or slope factor (b), [4]: , for t ³ g (1) , for t < g (t - the period of time required) For the durability problems of the elements which are in rolling contact, the following annotation for the parameters of the Weibull distribution function are given: Lo - the location factor, a - the scale factor, e - form factor, also known as Weibull slope.

Linear-elastic material properties [5-9] or elastic-plastic material properties [10-14] are used for the description of the material behaviour.
Hence from a mechanical point of view often shear crack growth is the leading crack growth mechanism.
The material properties of the elastic-plastic material model with combine hardening can be found in [14].
The computed crack driving force is the same for all contours until a relative rolling time of 0,35 s for linear-elastic and plastic material properties Figs. 1a,b.
d) c) b) a) Fig. 1: The crack driving force calculated within four integration contours (with crack tip denotes as the 1st contour) using linear-elastic (a) and elastic-plastic (b) material properties.

PSf is important in the polymer area due to its mechanical, thermal and chemical stability as well as its excellent film forming properties.
This objective is not easy to achieve because membrane structure and performance depend on different factors such as polymer choice, solvent and non-solvent choice, composition and temperature of coagulant and casting solution, among others.
Polysulfone and NMP were mixed under mechanical stirring.
The influence of molar mass in rheological solution properties is similar to increasing polymer concentration.
Therefore, the use of different PSf concentration and molar mass can modulate surface membrane properties and their final applications by modifying pore size.

The work reported here concentrates on resolving the energy consumption, consumables, low production efficiency of ring production, provided some reference for the rings production. 1 Introduction The traditional production of rings was alloy smelting, steel ingot casting, steel ingot cogging and forging, initial forging, punching, cutting, hot rolling forming, heat treatment process was generally taken to improve the material mechanical properties.
If directly use this ring in the hot rolling, there will be a serious hot crack which affect the quality of work-piece.
Table 2 Comparison of mechanical property between rolling and standard Tensile strength /MPa Yield strength /MPa Elongation /% Reduction of area /% Hardness /HB Standard ≥800 ≥550 13 50 ≥240 Sample 960 800 18 54 290 The mechanical property comparison between rolling experiments and standard of a factory are showed as table 2.
The mechanical properties of indicators higher than the standard values, it can be seen that rolling performance meet the standard requirements, which can be used to guide production. 3 Conclusions This contribution has described the process of ring product, the rings are large thick wall casting, The process of casting-rolling continuously forming was smelting casting→ ring blank→ concurrent heating and heat holding →hot rolling forming, the key process is to use waste heat directly on the hot rolling.
The mechanical properties of ring in casting-rolling continuously forming was above the standard of bearing ring, besides, it provided a reference for practical production.

The corresponding texture was essentially random, in contrast to that of the DRX grains dominated by low Taylor factor components.
Each of these processes can alter the austenite microstructure and texture characteristics, thus affecting the hot working loads, transformation products on cooling and final mechanical properties.
It is seen that the characteristics of the second deformation flow curves were significantly affected by the post-deformation holding.
Moreover, the low Taylor factor grains containing low dislocation density can be expected to preferentially consume, and thus replace, high Taylor factor grains having a comparatively high dislocation density during the progress of DRX.
This would explain the observed dominance of the A texture component, having the lowest Taylor factor (i.e. 1.7) among the main components, in the obtained DRX texture.

In the present work, experimental runs were accomplished according to L9 orthogonal array, i.e. three factors such as cutting speed, feed rate and depth of cut were considered and for each factor, three levels were chosen.
The range of levels for each factor are considered according to the literature review, tool and material properties and type of cutting environment.
Results and Discussion 3.1 Micro hardness analysis In this present experimental investigation, micro hardness of cutting inserts, an indispensable mechanical property, was studied and evaluated in details.
· Chip formation process was greatly affected by cryogenic treatment.
Serrations and material side flow were the two primary properties of chips found.

Throat: The corrosion of the throat is a factor affecting the campaign life of the furnace.
Side walls can also be backed up by chromic oxide plates for maintenance.Care should be taken for thermal shock properties.
Silica has the advantages of high temperature resistance, high level of insulation possibilities, good mechanical load properties, corrosion resistance to SiO2 attack.
If the properties of raw materials used for glass are good and the expected campaign of the furnace can be met with some maintenance, magnesite is still a good and cost effective solution.
The lifetime of the furnace is significantly affected with the life of the throat and sidewall blocks corrosion.