Effect Of Heat Treatment On Persistent Creep Properties Of Superalloys

Effect of heat treatment on persistent creep properties of superalloysThe most basic heat treatment of superalloys is solution and aging. Solution treatment temperature can make γ´ phase and carb...

The Function Of Vanadium In Steel

Effect of vanadium on microstructure and heat treatment of steel(1)Vanadium and iron can form a continuous solid solution, strongly reduce the austenite phase area.(2)Vanadium and carbon, nitrogen, o...

SA335 P91 Alloy Steel Pipe Welding Process Requirements

The SA335 P91 alloy steel is a new steel type that adds an improved elements of v, Nb, N, Ti and Al to the 9Cr-1Mo steel. The alloy steel pipe has good anti-high temperature oxidation and creep resi...

Ferroalloy Overview

Ferroalloys are developed based on the needs of steel and new metal materials industry, the current ferroalloy varieties have binary and multiple ferroalloys dozens, of which the largest amount of bi...

A Brief Description Of Microalloy Steel

Aug 12, 2019View: 104The role of microalloy elements in steel is to refine grains in order to improve the strength and toughness of steel, while relying on the analysis of microalloy elements to furth...

The Hazards Of Sulfur In Steel Pipe

Sulfur comes from the ore and fuel coke of steelmaking, which is a harmful element in steel. Sulfur is found in steel in the form of ferrous sulfide (FeS), FeS and Fe form a low melting point (985 de...

Pipeline Flange Connection Overview

1) The matching flange specifications and models are the same; When connecting with the flange of the equipment, it shall be matched according to its specifications.2) When the flange is connected, i...

Brief Introduction Of Automatic Rolling Process For Production Seamless Steel Pipe

Automatic rolling process is one of the production methods of seamless steel pipe.Production equipments include piercing mill, automatic pipe rolling mill, fixed diameter machine and slight reduction...

Introduction To Steel Segregation

Severe inhomogeneity of steel composition is called segregation. This phenomenon includes not only the uneven distribution of common elements such as carbon, manganese, silicon, sulfur and phosphoru...

Introduction Of Electric Arc Furnace Steelmaking

Electric arc furnace (EAF) steelmaking use electrical energy as heat source for steelmaking process, it is produced by the discharge between the electrodes and the burden of arc, the electric energy ...

Methods For Preventing Quenching Cracks In Medium And High Carbon Low Alloy Steel Tubes

Quenching treatment is carried out for medium and high carbon steel pipe (steel pipe mainly with low alloy steel or medium alloy steel) or for the emergency cooling method (water quenching) of Cr sta...

Factors Of Heat Treatment Deformation Of Steel

Factors Of Heat Treatment Deformation Of Steel The main reason of steel heat treatment deformation is the presence of internal stress or external stress in steel. The internal stress is caused by t...

5 Categories Of Heat Treatment Processes Commonly Used For Steel Tubes

There are many types of steel tubes, and the steel grades used are not the same. There may be some differences in the chemical composition of the steel tubes of the same variety, but the steel tubes ...

The Role Of Silicon In Steel Pipes

Silicon element is added as reducing agents and deoxidizers in the steelmaking process, so killed steel will contain 0.15-0.30% of silicon, when the amount of silicon in steel exceeds 0.50-0.60%, the...

Principles Of Solid-Soluble Reinforcement Of Metal Materials

Jul 15, 2019View: 1041.Definition of solid-soluble reinforcementThe alloy element is dissolved in the substrate metal to cause a certain degree of lattice distortion, thus increasing the alloy strengt...

Deformation And Selection Method For Cold Bending Of Steel Pipe

Bending pipe is widely used in boiler and pressure vessel industry, central air-conditioning manufacturing, automotive industry, aerospace industry, shipbuilding manufacturing and other industries, b...

Identification Of Steel Forging Crack, Heat Treatment Crack And Raw Material Crack

Steel forging crack generally formed in high temperature, forging deformation due to the crack expanding and exposure to air, when in 100 or 500 x x microscope, visible in the crack filling scale, an...

Heating Defects And Control In Heat Treatment Of Steel Pipes

1. OverheatingWe know that overheating in the heat treatment process is most likely to lead to the thickening of austenite grains, so that the mechanical properties of parts decline.The heating temp...

Principles For The Selection Of Pipe Materials For Pressure Linepipe

The selection of pressure pipe materials is determined according to the characteristics and operating conditions of the conveyed medium (e.g. pressure, temperature). In the selection of tube material...

Must Stainless Steel Flanges Be Connected With Stainless Steel Bolts?

304, 316 stainless steel bolts as low-strength bolts is only used for CL150/CL300 flange matching.The reason is low strength bolts can only withstand a limited preload. High pressure grade stiffness ...