Industry News

The processing of stainless steel flange needs to understand and pay attention to some 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 surface, will affect the appearance; 2, polishing and polishing passivation is not uniform: pickling passivat... Read More

Forgings of pickling and blast cleaning

Forgings are widely used in industry, such as aircraft, automobile and so on. Of course, forgings are also to be cleaned, the following is mainly to tell you about the knowledge of pickling and shot blasting forgings. Pickling and cleaning of forgings: Removal of metal oxides by chemical reaction... Read More

What is the difference between welded flanges, flat welded flanges and socket welded flanges?

In HG, butt-welded flanges, flat-welded flanges and socket welded flanges have different standards. Applicable occasions are different, in addition, butt-welding flange is the pipe diameter and wall thickness of the interface end and the same as the pipe to be welded, and the two pipes are welded... Read More

What are the characteristics of special steel?

Compared with ordinary steel, special steel has higher strength and toughness, physical properties, chemical properties, biocompatibility and process performance. But special steel has some different characteristics from ordinary steel. For ordinary steel many people are more understanding, but f... Read More

Selection standards of materials used for non-standard flanges

Non-standard flanges are non-metallic materials with a refractory degree of not less than 1587℃. It should be adopted according to the product design requirements, and should conform to the current relevant national material standards. Non-standard flanges are affected by physical and mechanical ... Read More

The important role of gear forging shaft

Gear shaft forgings according to the shape of the axis, the shaft can be divided into crankshaft and straight shaft two categories. According to the bearing capacity of the shaft, it can be further divided into: (1) The rotating shaft, when working, bears both bending moment and torque. It is the... Read More

How to choose heavy forgings?

Heavy forgings play a very important role in engineering, so how to process heavy forgings has become the content of everyone's attention, and then mainly to share with you some methods of processing heavy forgings. Heavy ring forgings is to roll the forgings into a round shape, which can basical... Read More

Introduction of non-standard flanges

Non-standard flange is a kind of flange relative to the national standard or some foreign standards. Because the standard flange can not meet the requirements of use in some special occasions, it is necessary to transform and improve some standard flanges. Non-standard flange is produced, and the... Read More

Three elements of heat treatment for forgings

1. Size effect: The mechanical properties of forged steel vary with its shape and size. Generally, the larger the size, the shallower the quenching depth and the lower the mechanical properties of the heat treatment in the same cooling medium. 2. Mass Effect Refers to the quality (weight) of the ... Read More

What are the main disadvantages of water as a quenching cooling medium for forgings?

1) in the austenite isothermal transformation map of the typical area, that is, about 500-600℃, water in the steam film stage, cooling speed is not fast enough, often cause uneven forging cooling and insufficient cooling speed and the formation of the "soft point". In the martensite transformatio... Read More

Flat – welded flanges and butt-welded flanges

The difference in structure between neck flat welding flanges and neck butt welding flanges lies in the different connection modes of the nooks and flanges. Neck flat welding flanges are generally nooks and flanges Angle connection, while neck butt welding flanges are flanges and nooks butt conne... Read More

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
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