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What are the general types of ship inspection?

2022-08-03 17:16:16

The technical supervision and inspection of the ship by the ship survey institution. The ship inspection casting manufacturer believes that its purpose is to make the ship have the technical condition...

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How to distinguish single eccentric, double eccentric and triple eccentric butterfly valves

2022-08-04 16:08:09

In order to solve the extrusion problem between the butterfly plate and the valve seat of the concentric butterfly valve, the Dalian marine valve manufacturer has produced the single eccentric butterf...

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Analysis of main factors affecting sealing of Dalian marine valves

2022-08-03 16:57:46

Leakage is one of the main factors causing accidents, so it is very important to improve the leakage prevention ability of Dalian marine valves. In fact, to prevent valve leakage, it is necessary to m...

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What are the common Dalian marine valves?

2022-08-03 16:45:32

There are many marine valves in Dalian. There are brass valves and red copper valves against seawater corrosion, as well as cast steel, stainless steel, ductile iron gate valves, globe valves, butterf...

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Analysis on the detection methods of surface and near surface defects of marine castings

2022-08-03 16:35:11

The inspection of marine castings mainly includes dimensional inspection, visual inspection of appearance and surface, chemical composition analysis and mechanical property test. For castings with imp...

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What are the causes of defects in marine castings?

2022-08-03 16:10:02

In casting production, the quality of marine castings should be controlled and inspected. The process rules and technical conditions for the control and inspection of each specific product from raw ma...

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How about marine sand casting and precision casting?

2022-08-01 15:54:56

The surface roughness of sand casting products is large, and the surface roughness of precision casting is good.Steel, iron and most non-ferrous alloy castings can be obtained by sand mold casting. Sa...

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How to improve the quality of marine castings?

2022-07-31 15:50:38

With the continuous development of Industrial Science and technology, the mechanical manufacturing industry and engineering circles have higher and higher requirements on the quality of marine casting...

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What are the aspects of product quality of ship inspection castings?

2022-07-30 15:42:34

The casting quality of ship inspection mainly includes appearance quality, internal quality and service quality. Appearance quality refers to the surface roughness, surface defects, size deviation, sh...

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How to divide the casting size of ship inspection?

2022-07-29 15:36:31

As for the size of castings in ship inspection, there is no clear division in relevant standards so far. The basic size and dimensional tolerance of castings are as follows:1) Basic size of casting: t...

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