Industry News
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What are the causes of flange leakage?
The reasons for flange leakage are as follows: 1. Deflection, refers to the pipe and flange are not vertical, different center, flange surface is not parallel. When the internal medium pressure exceeds the load pressure of the gasket, flange leakage will occur. This situation is mainly caused in ...Read more -
How is the sealing effect of the flange
Carbon steel flange, namely the body material is carbon steel flange or end flange connector. Which contains carbon steel flange, known as carbon steel flange. Common material is cast carbon steel grade WCB, forging A105, or Q235B, A3, 10#, #20 steel, 16 manganese, 45 steel, Q345B and so on. Ther...Read more -
Frequent problems in stainless steel flange processing
The processing of stainless steel flange needs to understand and pay attention to the following problems: 1, weld defects: stainless steel flange weld defects are more serious, if it is to use manual mechanical grinding treatment method to make up, then the grinding marks, resulting in uneven sur...Read more -
What are the grade requirements for butt-welded flanges
Butt-welding flange is the pipe diameter and wall thickness of the interface end are the same as the pipe to be welded, and the two pipes are welded as well. Butt-welding flange connection is easy to use, can withstand relatively large pressure. For butt-welded flanges, the materials are not the ...Read more -
DHDZ:What are the annealing processes for forgings?
The annealing process of forgings can be divided into complete annealing, incomplete annealing, spheroidizing annealing, diffusion annealing (homogenizing annealing), isothermal annealing, de-stress annealing and recrystallization annealing according to the composition, requirements and purpose o...Read more -
The eight major properties of forging
Forgings are generally forged after forging, cutting, heat treatment and other procedures. In order to ensure the manufacturing quality of the die and reduce the production cost, the material should have good malleability, machinability, hardenability, hardenability and grindability; It should al...Read more -
How many heating methods do you know about forgings before forging?
Preforging heating is an important link in the whole forging process, which has a direct influence on improving forging productivity, ensuring forging quality and reducing energy consumption. The proper choice of heating temperature can make the billet forming in a better plasticity state. Forgin...Read more -
Cooling and heating methods for stainless steel forgings
According to the different cooling speed, there are three cooling methods of stainless steel forgings: cooling in the air, cooling speed is faster; The cooling speed is slow in the sand; Cooling in the furnace, cooling rate is the slowest. 1. Cooling in the air. After forging, stainless steel for...Read more -
Knowledge of machining and forging round
Forging round belongs to a kind of forgings, in fact, a simple point is the round steel forging processing. Forging round has obvious difference with other steel industry, and forging round can be divided into three categories, but many people do not know about forging round, so let's understand ...Read more -
Knowledge of grain size of forgings
Grain size refers to the grain size within a grain size crystal. The grain size can be expressed by the average area or average diameter of the grain. The grain size is expressed by the grain size grade in industrial production. General grain size is larger, that is, the finer the better. Accordi...Read more -
What are the methods of forging cleaning?
Forging cleaning is the process of removing surface defects of forgings by mechanical or chemical methods. In order to improve the surface quality of forgings, improve the cutting conditions of forgings and prevent surface defects from expanding, it is required to clean the surface of billets and...Read more -
Defects in forgings when heated
1. Beryllium oxide: beryllium oxide not only loses a lot of steel, but also reduces the surface quality of the forgings and the service life of the forging die. If pressed into the metal, the forgings will be scrapped. Failure to remove beryllium oxide will affect the turning process. 2. Decarbur...Read more
