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The Swelling Properties of Nitrile Rubber with Different Acrylonitrile Contents in Cyclohexane Medium Research Huiming Wang1, a, Xiaoren Lv1, b and Shijie Wang1, c 1School of Mechanic Engineering, Shenyang University of Technology, Shenyang, China, 110870 awanghm118@126.com, bxrlvsut@126.com, c wang_shijie@263.net Keywords: Submersible screw pump; Nitrile rubber; Acrylonitrile content; Swelling properties; Mechanical properties.
By the research of swelling and mechanical properties of nitrile rubber with different acrylonitrile contents in cyclohexane medium, the influences of physical and mechanical properties with diffrent acrylonitrile contents is analyzed.
With different acrylonitrile contents and swilling times the nitrile rubber shows different mechanical properties.
（a） swelled NBR （b）dried NBR Fig.2 The Shore Hardness Change Rate Of Swelled And Dried Nbr In Different Soak Periods Mechanical Properties Tensile properties is one of the most important measure to the physical properties of rubber.
There are many factors can influence the rate of the permanent deformation such as rubber net structure between the molecules; molecular force; displacement between the molecules and so on.

The formed milling cutters are usually used in the processing of turnout, and the milling force is an active factor in the milling process which affects the functions of the machine tool and the enactment of process parameters, then the processing quality of turnouts is affected.
The material for turnout is high-manganese steel ZGMn13, which is difficult to be machined and has the properties of high hardness and strength, the chemical compositions and physical properties are shown in Table 1 and Table 2.
workpiece tool Fig.1 High-speed railway turnout Fig.2 Schematic diagram of curved switch rail milling Table 1 The chemical composition of high-manganese steel High-Manganes Steel [] [] [] [] [] 0.9～1.3 11～14 0.3～0.8 0.05 0.07 Table 2 The physical properties of high-manganese steel Steel No. [] [] [] [] ZGMn13 0.9～1.3 11～14 0.3～0.8 0.05 0.07 According to the material properties of the turnout, the features of the workpiece, and processing efficiency requirements, formed milling cutters (Fig.3) are usually used in the milling processing (Fig.2).
In addition, according to the dynamic mechanical properties of materials, the relation between true shear stress and strain is
Through analyzing, it is found that several factors lead to the error.

Further studies will present the results of the effect of alkaline earth metal nitrates on the deformation properties of adhesive joints and on rheokinetic and colloid-chemical properties.
In this paper, the main focus will be on the effect of divalent metal nitrates on the physical and mechanical properties of aluminosilicate adhesives for wood bonding.
Lapovska, Influence of Nitrate Species ANO3 and ANO3×nH2O on Physico-mechanical Properties of the Aluminosilicate Adhesives for Wooden Structures, Solid State Phenomena. 325, (2021), pp. 143-149
Adhesives – Applications and Properties (2016)
Kopylova, Study on physico-mechanical properties of the modified alkaline aluminosilicate adhesive-bonded timber elements, Solid State Phenomena. 296, (2019), pp. 112-117

Furthermore, the mechanical properties of the rubber compounds with and without processing oils were considered.
Tensile properties.
Payne effect indicating filler-filler interaction is one of the most important factors to formulate the properties of the rubber compounds containing particulate fillers.
There are four main factors that affect the levels of storage modulus of the silica-reinforced rubber compounds such as filler-filler interaction, in-rubber structure, polymer network, and hydrodynamic effect [15-16].
Mechanical properties.

Although being a popular stainless material with high mechanical and corrosion-resistant properties, widely used in various industries, forming of SUS304 steel by MSPIF technology still faces several challenges so in this study, with the simulation process, we have to determine the suitable values of influential factors to enhance the formability of SUS3043 sheet material.
With the Taguchi method, after analysis and selection, the L9 experiment is applied with 4 factors, each factor has 3 levels of value, and selected 5 stages.
X4 = Tool feed rate Vxy affecting the forming angle α.
The factors comprise: Angle between forming stages (Δα, X1): Represents the angle change between stages.
Secondary factor: The downward step (Δz) has minimal importance and can be adjusted after prioritizing the more influential factors.

However, the study for Ti6Al4V focus on microstructure, welding process, general Mechanical properties [1-3]and general Fatigue Property [4-6],The study for Fatigue Property of argon arc welding at corrosion condition of Ti6Al4V is still lacking, We studied Fatigue Property of welding joints of Ti6Al4V plate via simulate atmosphere condition and salt fog condition in the lab.
The plates thickness is 2.0mm, Chemical composition (wt%) of Ti6Al4V titanium alloy show:Al6.20%, V3.98%, Fe0.15%, Si0.06%, C0.09%, N0.05%, H0.018%, O0.15%, Ti is other, raw material status is annealed, mechanical properties of base materialσb=945MPa, σ0.2=889MPa, δ5=16.3%, ψ=36.2%..
Fatigue specimen of TI6Al4V welding were divided into two groups, one group is the specimen without hole, specimen outline shows in Figures1, it’s σb=968MPa, σ0.2=868MPa and stress concentration factor Kt=1; the other group is the specimen with holes, the two drilled holes locate in heat affected zone (HAZ), the distances between two holes is 10mm.
Stress concentration factor of welding specimen without holes is Kt=1, stress concentration factor of welding specimen with holes is Kt=3, The results indicate that tress concentration factor can strongly affect fatigue strength of Ti6Al4V titanium welding joints.
Microstructures and properties of TC4 alloy joints welded by the electron beam welding.

Scale and Surface Machining Quality Effect on Fatigue Properties for China Railway Grade B Cast Steel Wheel Y.X.
Random effects on fatigue lives and effect factors are constructed for measuring effects.
And it is a basic work to assess the scale and surface machining effect on the fatigue properties of the wheels.
Major flaw affecting randomly material condense of the wheel is from the casting shrinkage porosities.
Random affected sectional area related fatigue lives and the effect factors are constructed for measuring effects.

Prediction of Microstructure and Mechanical Properties in Hot Stamping Chao Wang, Bin Zhu, Yilin Wang1,* and Yisheng Zhang 2,* State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China * Corresponding author : 1Yilinwang@mail.hust.edu.cn, 2zhangys@mail.hust.edu.cn Keywords: hot stamping; mechanical properties; hardness; microstructure Abstract.
The significance of these differences is discussed later in section V, part D.S(X) in this model is expressed in the form of S(X)= 0XdXX0.41-X(1-X)0.4X (2) The influence of Boron Boron element content has a great influence on the mechanical properties. 10 to 30 PPM of boron addition in the high strength steel can affect the austenite grain boundary ferrite heterogeneous nucleation and increase the intensity of supercooled austenite.
For the ferrite reaction, the F in equation (1) is modified to FfComp=exp⁡(1.0+6.31CC+1.78CMn+0.31CSi+1.12CNi+2.7CCr+4.06CMo+kfCB) (3) For the pearlite reaction, the F in equation (1) is modified to FpComp=exp-4.25+4.12CC+4.36CMn+0.44CSi+1.71CNi+3.33CCr+5.19CMo+kpCB (4) For the specified steel grade, the values for the factors Kf and Kp can be obtained by experiments.

However, its welded heat-affected zone, HAZ, substantially affecting the strength of a welded joint, will be easily softened after welding.
Introduction Ultra-fine grained steel (UFGS) with an average grain size of less than 1µm has been developed [1] and is expected to demonstrate superior properties in strength, low temperature toughness, corrosion resistance, and fatigue strength [2].
Additionally, another criterion of the softening mechanism was evaluated through the mechanical properties, based on S-S curves shown in Fig.4 (b), prepared from both positions.
A possible explanation of this outcome was that the initial plate temperature was a primary factor in restraining temperature rising during welding.
Fig.8 Effect of initial plate temperature on the HAZ size on the HAZ size. 3.3 Mechanical Properties Fig.9 illustrates the effect of liquid nitrogen cooling on Vickers hardness distribution around the weld bead.

Inconel 718 is a Nickel based Heat Resistance Super Alloy (HRSA) that is vastly used in the aerospace industries due to its excellent corrosion resistance and good mechanical properties.
The resulting tool wear and surface roughness after high speed machining were then analysed using ANOVA to determine the cutting parameters which is most affecting the surface roughness.
Surface Roughness is an important factor that can affect the component life and service quality of the product.
Mechanical properties of Inconel 718 Mechanical Properties Density 8220 kg/m3 Ultimate tensile strength 1375 Mpa Yield strength 1100 Mpa Young’s Modulus 211 Gpa Hardness 36 RC Table 3.
The mechanical properties of Inconel 718 are listed in 2.