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In the casting process, there are several factors that affect the quality of casting products, including raw material, compositions, mold sand quality, drainage systems, melting systems, pouring conditions, and finishing products [3].
Casting defects such as hot tearing also commonly found in casting products, the defect will affect the material properties [4,5].
The advantage of the casting process produced some products with a complicated shape and size that close to the original products, simplifying the production process, and the mechanical properties are usually isotropic structure.
One material category was selected and would be expected to obtain the same composition of recycling alloy which affects the physical and mechanical properties of the material.
Eman, The Influence of Different Casting Method on Solidification time and Mechanical Properties of AL- Sn castings.

Its performance will directly affect the stability and service life of the instrument and equipment [1].
The effects of Gr content on the microstructure, mechanical and electrical properties of copper matrix composites were studied, which provided theoretical basis for the application of Gr/Cu composites.
The defects such as internal pores in composites will lead to the decline of the comprehensive properties of the composites.
This may be caused by two factors.
Sun, The thermal, electrical and thermoelectric properties of graphene nanomaterials, Nanomaterials. 9 (2019) 218-246

Mechanical Model and Movement Analysis of Self-adjusting Bolt in Converter Qiang Yin1,a, Gongfa Li2,b 1College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023,China 2College of Machinery and Automation,Wuhan University of Science and Technology, Wuhan 430081, China aemail:ydqking1210@sina.com, bemail:ligongfa@yahoo.com.cn Keywords: Converter;Self-adjusting Bolt; Mechanical model; Movement Analysis.
Analyzing these factors should be combined with practical condition.
So the bolt is not affected by any force. .
(3) Use appropriate thermal treatment method to improve the mechanical property of the self-adjusting bolt, and take surface strengthening measures,and improve its fatigue life.
And also take mechanical analysis to determine the most dangerous position.

Effect of pyrophyllite on the physical-mechanical properties of fiber concrete was analyzed.
Effect of the pyrophyllite on the physical-mechanical properties of ultra performance polypropylene fiber concrete is analyzed.
- Based on these results, compressive strength can be considered as potentially useful in predicting mechanical properties of concrete
Meziane, Mechanical and durability properties of cement mortar with Algerian natural pozzolana, Journal of Material Science. 41 (2006) 6965– 6972
Brostow, Mechanical properties of polypropylene-fiber reinforced concrete after gamma irradiation, Composites: Part A. 42 (2011) 567–572

Mechanical Properties of Deformed Interfaces in Bimetallic Joints F.Muktepavela and J.Maniks Institute of Solid State Physics, University of Latvia, 8 Kengaraga St., Riga LV-1063, Latvia Keywords: interfaces, plastic deformation, strength properties, metals, eutectic alloys Abstract.
The objective of the present work is to investigate the mechanical properties of interfaces in bimetallic joints obtained under conditions of severe plastic deformations at room temperature by a special cold welding method.
To obtain the interfaces of metals with highly different mechanical properties, the softer metal is located between sheet specimens of a harder metal and separated from both sides by a hard foil.
The strength properties of the bimetallic joints were determined by shear tests.
It has been shown that the mechanical properties of interfaces depend on the nature of metals, adherence, and type of chemical interaction, extent of the preliminary deformation as well as on testing conditions.

Die casting defects occur because of failure of complex and diverse, from the analysis below of several failures in the form casting mold and start to explore the main factors in the practical application of some measures to improve the life of die-casting mold.
The plastic material toughness is associated with this phenomenon corresponds to the most important mechanical properties.
To maximize the potential of mold steel, heat-resistant mold steel is generally more than to go through repeated rolling or forging process pier, to destroy the original band structure, or carbide together to improve their mechanical properties.
mold and mold manufacturing precision manufacturing process.old and mold manufacturing precision manufacturing process, is also an important factor affecting the life of the mold.
Conclusions Die-casting die life is affecting product quality, production efficiency of the key.

Cracking and Mechanical Strength of NaOH-Slag Geopolymers Bo Zhang Triodent Ltd, Katikati 3129, New Zealand Email: zhangbo66@yahoo.com Keywords: Geopolymer, slag, sodium hydroxide, crack, strength, curing temperature Abstract The effect of the curing temperature and NaOH content on cracking tendency and compressive strength for NaOH-slag geopolymers is reported in relation to 29Si and MAS NMR structural analyses and XRD phase quantitative analysis. 1.
Introduction Mechanical properties of NaOH activated slag geopolymers are an important consideration for structural applications.
Pratt, “Factors affecting the strength of alkali-activated slag”, Cement and Concrete Research, 24 (1994) 1033-1043 2.
Vladimir Zivica, “Effects of type and dosage of alkaline activator and temperature on the properties of alkali-activated slag mixtures”, Construction and Building Materials, 21 (2007) 1463-1469. 3.
Sanjayan, “Shrinkage cracking properties of slag concretes with one-day curing”, Magazine of Concrete Research, 60 (2008) 41-48 6.

Effect of SiO2 nanoparticles on the mechanical and low velocity impact properties of epoxy/glass composites Landowski Michał 1,a, Imielińska Krystyna 1,b 1 Mechanical Faculty, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland.
Hence rigid, inorganic particles have also been used as these can increase the toughness without affecting the Tg of epoxy polymer.
It is evident that various nanoparticles have high potential as resin reinforcement due to very large surface of particle/matrix interaction, however the majority of the results show only moderate improvements of the mechanical properties of nanoparticle –modified epoxy/carbon or glass fibre reinforced composites.
Thus energy absorption mechanisms such as nanoparticle debonding and microvoid formation can contribute to the enhacement of the mechanical properties.
Hoa, Mechanical properties of carbon fiber reinforced epoxy/clay nanocomposites: Composites Science and Technology, 2008, vol. 68, 3-4

Study shows that the cutting speed and feed is an important factor to determine the main cutting force.
Cutting heat affects the physical properties of metal materials as a product of the energy conversion.
Hardened steel has high mechanical strength and fatigue wear resistance, it is widely used in many fields, because of hardened steel cutting performance is poor, so it is hard to obtain accurate cutting force, cutting heat and other important data in the actual machining process.
Using single factor experiment method respectively to change cutting speed and feed rate and the main cutting force data results.
Conclusion Cutting speed increase lead to the main cutting force is reduced, but the influence of cutting speed on cutting force is small.Feeding is not the main factors of influencing the cutting force, but cutting force will increase with the increase of feed.Equivalent stress mainly distributed in the region of the blade, so the blade must to have stronger cutting performance.

In the pink sand embankment construction, silt plus in the shop packet core to improve the slope of soil anti-erosion ability, this layer of soil compaction hemming and slope gradient, slope shape and other factors on the slope of the anti-erosion performance had a direct impact, in the quantitative comparison of these factors under different rainfall adverse effects on the slope erosion after, determine the limit rainfall intensity of slope could bear.
Table 1 Type of slope erosion Erosion intensity Mild erosion Moderate erosion Severe erosion The amount of soil erosion（kg/m2） △M <1.0 1.0<△M <10.0 △M >10.0 No protection engineering measures Splash, Sheet erosion, Gully erosion, Single run-off erosion Groove erosion, Convergence of multiple run-off erosion Deep-groove erosion,Slump, Destroyed Protective engineering measures had Plant protection slope erosion, Potential erosion - - Factors that affect erosion The density of soil covered.
Table 2 show the resulting physical and mechanical-related indicators of powder sand and cover soil.
Slope gradient is the basic factor of run-off erosion.
Study on rain wash properties and effect of Reinforcement Material for Highway sub grade Slope in Chinese [D].Shanghai,South China University of Technology Dissertation,2003