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Metallographic diagram of 15 steel (directly quenched after liquid carbonitriding)
A microstructure of C15 steel examined from metallographic standpoint can be observed in Figure 1. This sample has been heat-treated by liquid carbonitriding and heat treat in the same way. C15 steel is a martensitic carbon steel that can be used for a variety of applications, including bearings a......
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The latest method for inspecting the cleanliness of metal surfaces
Introduction
Metal surface cleanliness has traditionally been assessed by visual methods and tactile methods. Visual methods are limited by the resolution capabilities of the human eye, and tactile methods are time consuming and prone to human errors. In recent years, a wide variety of new method......
Phosphating
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Structural Characterization of Films Formed by Chemical Phosphating
Chemical phosphating is a chemical surface treatment used to improve corrosion resistance and paint adhesion on metals such as steel and aluminum. The process involves the application of a phosphoric acid solution to the su......
Qualitative and quantitative analysis of chemical composition of plating bath
Qualitative and Quantitative Analysis of Bath CoatingChemical Components
Abstract
Bath coating as a special composite coating has been widely used in automobile, ship and other industries. In this paper, the physical and chemical characteristics of the bath coating were studied by means of the p......
heat distortion temperature of copper alloy
Copper Alloy Hot Deformation Temperature
The temperature of hot deformation for copper alloy is an important factor in determining the specific properties of a given material. It also affects the cost of the material, as hot deformation at higher temperatures usually comes with a higher price tag......
Forging technology: titanium alloy forging quenching, aging heat treatment
Abstract
Thestudy concentrates on the formation of titanium alloy forgings by press& forging, quenching and tempering, aging thermal treatment process. The purpose of this technology is to improve the structure and properties of titaniumalloy forgings, thereby improving the strength and toughness......
Oriented crystal AlNi alloy magnet
Introduction
Magnetic alloys composed of aluminum, nickel and zinc have been widely used in many industries due to their excellent magnetic properties and good electrical conductivity. AlNiZn alloys are attractive due to their high coercive forces, low coercivity, good resistance to oxidation and......
Influence of Oxide Film on Metal Liquid Surface on the Quality of Aluminum Alloy Castings
A Study of the Effects of Aluminium Alloy Castings Quality from Metal Liquid Surface Oxide Film
Introduction
Formation of oxide films on the surface of aluminium alloy castings is an inevitable phenomenon during the manufacturing process. This film affects the performance of the final product qu......
Ways to Exclude and Reduce Non-metallic Inclusions
Removal and Reduction of Nonmetallic Inclusions
Nonmetallic (NM) inclusions, which are mostly oxides, sulfides, silicates, nitrides and carbon particles, are a major cause of surface defects and cracking of metallic products. These inclusions may be found in a variety of commercial aluminium prod......
Ingot Microsegregation
SEM Analysis of Steel Ingots
Steel is an important metallic material used in many aspects of life. Steel is used in the construction of buildings, bridges and automobiles, and in making tools and equipments oInfs all kinds. To ensure the quality of steel, ingots of steel usually are analyzed in......
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