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ASTM A29/A29M-1993 Standard Grain Size of Hot-Worked and Cold-Worked Carbon and Alloy Steel Bars
Abstract
This article aims to discuss the practices on grain size measurements of ASTM A29/A29M-1993 hot-processed and cold-processed carbon and alloy steel bars. The procedures for grain size measurements are thoroughly discussed, beginning from the selection of specimens, followed by the sample......
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GB 12827-91 standard reference acetylene carbon black and identification method
Carbon black refers to black powdery or granular material, which is composed of many tiny particles with the average particle size of between 10 and 2000 nanometers. It is composedot many carbon atoms buthydrophobic in nature. Carbon black can be prepared by pyrolysis of hydrocarbons such as coal ......
Stainless acid-resistant steel rod (GB 1200-92) (3)
Stainless steel bars (GB 1200-92)
Stainless steel is a special steel that is resistant to corrosion, acid and alkali, and has no rust in the air. It is mainly used to make products with high hardness, wear resistance and corrosion resistance, such as aviation, petrochemical, metallurgical machine......
Commonly used heat-resistant cast iron grades
Common Heat-Resistant Cast Iron Grades
1. Grey Iron
Grey iron is a ductile product produced from pig iron. It contains 3.5-4.5% carbon and can contain silicon, manganese, and sulfur. Grey iron has both superior strength and wear resistance, making it an ideal choice of material for many automoti......
Common vocabulary in combustion and mechanical design
Combustion Terminology
Adiabatic Combustion—An ideal combustion reaction taking place without any heat exchange between the products of combustion and the environment.
Aerosol—A suspension of fine solid or liquid particles in a gas.
Autoignition Temperature—The minimum temperature at which a......
Commonly used English for machinery: surface treatment, heat treatment
Surface Treatment and Heat Treatment
Modern machinery consists of many components made of a variety of different materials. In order to ensure the best performance of these components, most require some form of surface treatment and/or heat treatment. In simple terms, surface treatment and heat t......
Magnetic Properties of Minerals
Magnetic Properties of Minerals
Minerals are naturally occurring solid substances that have physical and chemical properties that are used to identify and classify them. Minerals can also have magnetic properties, or the ability to be attracted to a magnetic field. This magnetism is due to the pr......
mineral oxidation
Mineral Oxidation
Mineral oxidation is an important factor in determining the composition and composition of rocks. In a well-developed weathering profile, oxidation is one of the primary factors that influence the physical and chemical properties of minerals. The minerals of a given rock tend to......
Mineralogical analysis of beneficiation products
Mineralogical Analysis for Selecting Mineral Products
The selection of mineral products can be made on the basis of mineralogical analysis. Mineralogy is the scientific study of minerals, Crystal structures, and their physical properties. This analysis provides an assessment of the components and......
mineral Crystal structure
Introduction
Minerals are naturally occurring inorganic solid substances made up of atoms, molecules, or ions held together by chemical anchors and organized into regular three-dimensional Crystal structures. While many are known and identified, there are still unknown minerals or undiscovered co......
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