Thread selection and application for forged steel valves
- Mar 12, 2019
- Hits: 17
The main connection methods for small-diameter forged steel valves (gate valves, globe valves, check valves, ball valves) include flanged connections, socket welds and threaded connections. Threaded connections...
Basic principle of sealing surface grinding of forged steel valves
- Mar 08, 2019
- Hits: 22
Grinding is a kind of finishing method commonly used in the sealing surface of forged steel valves. Grinding can achieve high dimensional accuracy, geometrical thickness and surface roughness of the forged...
Difference between common stainless steel 304, 304L, 316 and 316L
- Mar 07, 2019
- Hits: 100
Corrosion resistance: 316 stainless steel has better corrosion resistance than 304 stainless steel and has good corrosion resistance in the production of pulp and paper. Moreover, 316 stainless steel...
Common stainless steel 304, 304L, 316 and 316L in the valve field
- Mar 07, 2019
- Hits: 46
The difference between the common stainless steel 304, 304L, 316 and 316L Stainless steel valves are usually used in applications where the working medium has certain corrosive properties. The steel used...
Selection of valve materials for several acidic media
- Mar 02, 2019
- Hits: 23
t: Selection of valve materials for several acidic media k: Chemical Valves, Stainless Steel Valves, Pump Valves, Valve Material Selection, Fluorine-Lined Valve, Rubber-Lined Valves, Plastic Lined...
Common non-destructive testing methods for forged steel valves
- Mar 02, 2019
- Hits: 512
Some valves require non-destructive testing for special conditions, including but not limited to forged steel valves. Here are some tips for nondestructive testing. NDT is an abbreviation for Non-destructive...
Factors affecting quenching crack or heat treatment crack
- Mar 01, 2019
- Hits: 180
Factors affecting quenching crack There are many factors affecting the quenching crack. Here, only a few cases that are often encountered in production are introduced. 1. Quenching crack caused by defects...
Brief analysis on forging crack and heat treatment crack
- Mar 01, 2019
- Hits: 869
Forging crack Forging cracks are generally formed at high temperatures. During forging deformation, the cracks expand and contact with air. Therefore, under the microscope of 100X or 500X, the cracks...
The purpose of forging and causes of forging cracks
- Feb 28, 2019
- Hits: 1903
First of all, it is necessary to define the concept of "raw material crack" and "forging crack". For cracks appearing after forging, it should be understood as "forging crack"....