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Is there a requirement for hardness of shaft forgings?
Surface hardness and uniformity of shaft forgings are the main items of technical requirements and routine inspection. The hardness of the body shows the wear resistance, etc., in production, the r...Read more -
What are the quality checks for forgings?
In order to ensure the quality of forgings to meet the requirements of design and use of the indicators, it is necessary to forgings (blank, semi-finished products and finished products) quality in...Read more -
Details to note when using threaded flanges
Threaded flange refers to a flange connected by thread and pipe. During design, it can be handled according to loose flange. The advantage is that no welding is required, and the additional torque ...Read more -
Why do you choose 304 butt welded stainless steel flanges
Let's start with a fact: Austenitic stainless steel pipes are commonly used in a variety of corrosive environments. However, if you are careful, you will find that in the design documents of some u...Read more -
How to identify the quality of forging
The main task of forgings quality inspection and quality analysis is to identify the quality of forgings, analyze the causes of forgings defects and preventive measures, analysis and research It is...Read more -
Three methods of carbon steel flange sealing
There are three types of carbon steel flange sealing surface, which are: 1, tenon sealing surface: suitable for flammable, explosive, toxic media and high pressure occasions. 2, plane sealing surfa...Read more -
Do you know the four fires of heat treatment in forging technology?
Forgings in the forging process, heat treatment is the most important link, heat treatment roughly annealing, normalizing, quenching and tempering four basic processes, commonly known as metal heat...Read more -
Factors affecting oxidation of forgings
The oxidation of forgings is mainly affected by the chemical composition of the heated metal and the internal and external factors of the heating ring (such as furnace gas composition, heating temp...Read more -
Methods for inspection of large forgings
Due to the high cost of raw materials for large forgings, as well as the production process, if defects occur, they will affect the follow-up processing or poor processing quality, and some affect ...Read more -
Injection molding of stainless steel flanges
Stainless steel flanged ball valve, globe valve, gate valve when used, only for fully open or closed, do not allow to do flow regulation, so as to avoid sealing surface erosion, accelerated wear. G...Read more -
What’s different killed steel and Rimmed steel!!!
Killed steel is steel that has been completely deoxidized by the addition of an agent before casting such that there is practically no evolution of gas during solidification. It is characterized by...Read more -
How is the flange welded?
1. Flat welding: only welding the outer layer, without welding the inner layer; Generally used in medium and low pressure pipelines, the nominal pressure of the pipeline is less than 0.25mpa. There...Read more
