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Diamond core drill bit by the different thickness of welded steel and powder metallurgy materials, which has many varieties, high accuracy and hard of laser welding [2].
Now, working in Hebei University of Science and Technology.
[3] Chao Zheng: Superhard Material Engineering, Vol. 18 (2006), p. 37(In Chinese)
[4] Kaitai Fang, Changxing Ma, Jiukun Li: Journal of Applied Statistics and Management, Vol. 18 (1999), p. 35(In Chinese)
Fang: Uniform Design& Tables of Uniform Design (Science Press, Beijing 1994)

The needed bearing capacity of a single component increases, therefore, the requirements for material’s performance become higher [1, 2].
Material and Methods The large scale angle steel of Q420 with width of 300 mm and thickness of 30 mm were used in this study.
GB/T 229-2007 Metallic materials Charpy pendulum impact test method.
GB/T 228.1-2010 Metallic materials tensile testing at ambient temperature.
Komizo, Analytical investigation of prior austenite grain size dependence of low temperature toughness in steel weld metal, Journal of Materials Science and Technology –Shenyang 20 (2012) 241-248

Material and methods Sources of material and physical and chemical properties: The raw materials of the high calcium fly ash ceramsite selected came from power plant waste ash, which main chemical elements were O, Si, Al, Fe, Ca, etc.
Science and Technology. 2001, 44 (11/12): 47-54
Environment science, 2005，26 (1):51-55
Journal of Liaoning Technology University, 2006, 25(12):291-292
Beijing: China Environmental Science, 2006: 250－357

China; 2 Department of chemical and science technology, Kunming University, Kunming, 650214, P.
China. 4 Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices, Kunming University, Kunming, 650214, P.
H., Investigation on the production of copper nitride (copper azide) thin films and their nanostructures, Journal of Theoretical and Applied Physics. 7 (2013) 2
H.Y., Study on copper nitride thin films prepared by reactive DC magnetron sputtering, Functional and Electronic Materials. 687 (2011) 706
Hayashi, Hydrogen Implantation Effects on the Electrical and Optical Properties of Metal Nitride Thin Films, Materials Transactions. 43 (2002)

Materials and Methods Smartphone-Based FTS Design.
Manzini, “Traceability of food products: General framework and experimental evidence,” Journal of Food Engineering, vol. 81, no. 2, pp. 347–356, Jul. 2007, doi: 10.1016/j.jfoodeng.2006.10.032
Ip, “A radio frequency identification and sensor-based system for the transportation of food,” Journal of Food Engineering, vol. 101, no. 1, pp. 120–129, Nov. 2010, doi: 10.1016/j.jfoodeng.2010.06.020
Marvin, “Internet of Things in food safety: Literature review and a bibliometric analysis,” Trends in Food Science & Technology, vol. 94, pp. 54–64, Dec. 2019, doi: 10.1016/j.tifs.2019.11.002
Bhattacharya, “Internet of Things and smart sensors in agriculture: Scopes and challenges,” Journal of Agriculture and Food Research, vol. 14, p. 100776, Dec. 2023, doi: 10.1016/j.jafr.2023.100776

Study on the Preparation and Characteristics of Calcium Carbonate/Polyvinylidene Fluoride（CaCO3/PVDF）Hybrid Membrane Xi Liu1, a, Wei Wang2, b 1Tianjin Polytechnic University, Tianjin 300160, China 2State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin 300160, China a139liuxi@163.com, bwangwei7126@126.com Keywords:calcium carbonate; PVDF; hybrid membrane; blending Abstract.
Experimental Experimental materials.
The materials and reagents used for the study were PVDF(polyvinylidene fluoride), DMAc, CaCO3,PVP.
In this experiment, with PVDF as raw material, carbonate/polyvinylidene fluoride hybrid membrane was made by using dry- wet spinning process.
Journal of Membrane Science, 276 (2006) 162- 167

The use of appropriate corrosionresistant coatings on metallic components can minimize material degradation and extend component life.
The degradation of materials were observed in the depth of about 100 µm for the sulphidation under ps2= 10-8 atm and occurred along the dendrite boundaries.
Summary In the course of investigation it was stated that the result of the sulphidation process for multicomponent and inhomogeneous material is difficult to predict on the base of binary phase diagram.
Materials Research, Vol.7, No.1 (2004)
Journal of Materials Sciences, Vol. 33 (1998), p. 2617-2628.

(Natural Sciences),2005,27(1):6~10.
[4] Qiang Feng, Seepage Analysis for Dashiban Landslide Applied Multi-day Rainstorm Once in Fifty Years, Advanced Materials Research, Vols.374-377:2493-2496,2012
[5] Qiang Feng, Seepage Analysis for Dashiban Landslide Applied Multi-day Rainstorm Once in Hundred Years, Applied Mechanics and Materials, Vols.117-119:443-446,2012
[6] Qiang Feng, Shirong Xiao, Seepage Analysis for Qianjiangping Landslide Applied Three Gorges Reservoir Water Level and Heavy Rainfall, Applied Mechanics and Materials, Vols. 90-93:734-737,2011
[7] Qiang Feng, Shirong Xiao, Mechanical Mechanism Analysis for Qianjiangping Landslide Damage on Three Gorges Reservoir, Advanced Materials Research,Vol. 340:126-129,2012

Application of Numerical Simulation in Optimizing Rubber Injection Molding Process Zhang Huimin a,Niu Jiateng b and Dong Leilei c Shandong Provincial Key Laboratory of Polymer Material Advanced Manufacturing Technology College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 260061, R.P.
Lower flow front temperature will affect the melt material liquidity, make the filling difficult and affect the appearance of product.
(a) (b) (c) (a - plan 1; b - plan 2; c - plan 3) Fig.3 Flow front temperature We can see from the graph: the third plan in the three plans has the minimum flow front temperature, and the front melt with the mold filling process has little cross-linking reactions, therefore it is not easy to produce weld marks in meeting point of flow materials and affect the quality of products.
In this temperature range, the melt material has better liquidity, so the mold filling process can completed smoothly.
Chinese journal of chemistry, 2002, 60 (8): 1368-1373

Richard, Nature Materials 13, 418-426 (2014)
Richard, Optical Materials, 35, 10 1852-1858 (2013)
Gourier, Chem. of Materials 26, 3, 1365-1373 (2014)
Tanabe, Journal of Materials Chemistry C, 1 47, 7849-7855 (2013)
Poelman, Materials, 3, 2536 (2010) [30] M.