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The study of the properties and function of Large ball mill with liner material Jingpei Xie 1,b,Ningbo Li 1,2,a, Wenyan Wang 1,2,a, Aiqin Wang1,2,a,Pei Zhang1,a 1The School of Mater.
Henan University of Science and Technology, Luoyang, 471003,China; 2Henan Key Laboratory of Advanced Non-ferrous Metals, Luoyang 471003, China aningbo721403@163.com, bxiejp@mail.haust.edu.cn Keywords: Cr-Mo steel, heat treatment, mechanical properties, wear resistance Abstract：In this paper, based on ctual large-scale ball mill liners working conditions, effects of different quenching temperature and tempering temperature on the Cr-Mo steel performance, optimize the best heat treatment process.The use of sophisticated electronic universal tensile testing machine, and Rockwell hardness testing machine for testing mechanical properties of steel materials were tested; Using the MMS-1G-type high-temperature high-speed Friction and wear tester, the wear properties of steel samples were studied using JSM-5610LV scanning electron microscope study of the tensile test fracture surfaces of steel and the friction and wear morphology.
In this experiment, the Cr-Mo alloy steel is heat-resistant steel, the development of new materials as Cr-Mo steel than conventional high carbon content, to improve their mechanical properties better the content and methods of experimental Experiments with Cr-Mo low alloy carbon steel is in its composition (wt%) is: 0.65 ~ 0.75C, 0.30 ~ 0.65Si, 0.55 ~ 1.00Mn, 1.80 ~ 2.50Cr, 0.25 ~ 0.30Mo and the margin of the Fe , S, P content , less than 0.03. the process of the experimental steel quenched and tempered heat treatment operates in the model for the SX-4-12 box-type high-temperature resistance furnace.
Table 2-1 The experiment steel mechanical properties test results contrast Sample Number Yield strength（MPa） hardness（HRC） Tensile strength（MPa） Elongation rate（%） Contraction of area（%） A 1200 34.5 1300 5.5 6.0 B 1210 37.0 1310 3.0 3.0 C 1120 36 1220 7.0 9.5 D 1180 36.5 1280 4.5 4.5 Analysis of the Tensile fracture It can be drawn from Figure 3-2, a), b), d) ,all intergranular brittle fracture, c), subject to cleavage a) ,for the sample quenched after 870 ˚C 600 ˚C tempered form of tensile fracture appearance, the hard particles within the fracture from the crystal, a kind of ray florets and dimple pattern with torn edges and river, the river is short and curved pattern, a small tributary, cleavage plane is small, and more tears around the edges , they spread around from the source, not continuous, local extension, quasi-cleavage facet phase is not strictly correspond with the cleavage plane, to a certain extent, One square block of TiN particles suspension affects their strength.
Controlling of friction and component wear as a competitive factor[J].

Spindle speed, spindle feed, tool angle and work sample were selected as factors.
A p-value less than 0.05 represents the predominant factors and a value greater than 0.1 represents the non-predominant factors.
The optimum values of factors, outputs and desirability factors were listed in Table 5.
Feed rate, tool angle and work sample were majorly affecting the damage factor whereas speed and work sample were majorly affecting the surface roughness. 2.
Hence, the presence of natural fibers not only improves the mechanical properties, it also enhances the machinability performance of composites by reducing the damages during drilling. 3.

Using the interactive software, this study was mainly focused on developing a 3-D joint shape after the as-reflowed soldering which is the one of chief factors affecting the reliability.
The shape is partly dependent upon some interior factors, such as melting point, surface tension, wetting angle and density of the material.
Some external parameters, the dimension and volume of the solder paste, pad size, stand off height, are considered as major influencing factors for the solder shape.
The purpose of this paper was to compare the profiles of different cross-sections with the experimental ones and discuss the influencing factors of the mechanical reliability.
(3) All the physical properties are uniform in the solder joint

The tested oil film working properties was analyzed by comparison with theoretical or simulation references.
Experiments show that film balance time and thickness are two key parameters for describing oil film properties, and that working condition factors such as supply pressure, lubricating fluid temperature also notably affects the film thickness and its configuration, but they don’t show equivalent action.
The port pair gap is affected by structure and motion precision from itself and other parts.
Moreover, leakage flow rate, viscidity and oil temperature and frictional torque etc, are also the important characteristic parameters because all of them have a bearing up on oil film shape or properties.
Chinese Journal of mechanical engineering.42 (3): 36-39, 45

The present paper focuses on the pearlite appearance, since it strongly affects the mechanical properties.
The pearlite interlamellar spacing (ILS) will highly affect the mechanical properties of the grey cast iron.
Results from tensile test and mechanical properties of the investigated materials are elsewhere presented and discussed more detailed [9].
Other factors as e.g. pouring temperature and inoculation will also affect the final graphite structure.
Nilsson: Effect of alloys on mechanical properties in grey iron, Swedish Foundry Association (1982)

The property of fiber can meet the operation requirements of high speed paper machine.
Handsheets were prepared and their physical properties were tested.
Handsheet properties hand towel will compare to them.
There were two main factors of affecting absorption.
One factor was that the EMP contains numerous lignin, fatty acids, and wax, etc.

The rock fragmentation process is the interaction process between TBM and rock mass, which is affected by TBM specifications, such as thrust force, cutter tip width and profile, cutter spacing, RPM, and torque, and rock mass properties mainly including rock material strength, rock brittleness, joint spacing and orientation.
Subsequently, use of interactive multi-factor orthogonal test method, impact of significant factor during the breaking process has been obtained.
The input parameters for the rocks modeled were determined based on the measured rock properties.
The properties of the rock models were represented using a linear equation of state (EOS).
Table 1 Mechanical properties of the rock types modeled in this study.

The microstructure, texture and mechanical properties of the extruded alloy were investigated.
And so the mechanical properties and heat resistance of Mg alloys could be greatly improved by the dispersed precipitates due to aging treatment.
The influences of microstructure and texture on the mechanical properties of the extruded alloy sheets were investigated.
The crystallographic texture is the most reasonable factor for the mechanical anisotropy.
Wang, Structure and mechanical properties of extruded Mg-Gd based alloy sheet, Mater.

MAGNETIC PROPERTIES STUDY OF NANOCRYSTALLINE COBALT AND COBALT- BASED ALLOYS N.E.
Introduction Ball milling (BM) is one of the possibilities to prepare materials with exceptional mechanical and magnetic properties.
This change in the microstructure can affect mechanical and magnetic properties, particularly, coercivity, Hc, and squareness ratio, Mr/Ms, which are very important parameters from an industrial point of view [2,3].
Microstructural [4-6] and magnetic properties [7,8] of ball milled Co have been previously reported.
ΩΩΩΩ Mr/Mscrystallite size and consequently in the magnetic properties.

The mechanical property and thermal property of molded specimen made from LWF were also evaluated.
From the above discussion, conclusion can be drawn that the P/W ratio is an important factor substantially affecting the reaction pathway and the structural characteristics of LW.
It is generally thought that molecular weight, molecular weight distribution and molecular structure are the main factors affecting flowing properties of polymers [7].
Evaluation of molded specimen made from LWF properties.
The thermal property of molded specimen prepared from LWF was little inferior to that of the commercial resin, but the mechanical properties from LWF were even slightly superior to those from the commercial resin.