Control of molten steel quality to reduce sand hole and air hole defects of large steel castings
The market has higher and higher requirements for the quality of large and medium-sized steel castings. The castings requiring ultrasonic […]
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steel casting
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Control of water glass to reduce sand hole and air hole defects of large steel castings
1. Quality control of sodium silicate. “Modulus, concentration” and “guest salt” (NaCI, Na2SO4, Na2CO3, etc.) are important parameters of sodium
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Main factors for reducing sand hole and air hole defects of large steel castings and quality improvement scheme
1.How to control the pouring temperature? Since lowering the pouring temperature has so many advantages, how can we ensure smooth
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Reducing pouring “temperature” to reduce sand hole and air hole defects of large steel castings
Reducing pouring “temperature” to reduce sand hole and air hole defects of large steel castings Reducing the pouring “temperature” is
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Reduce sand hole and air hole defects of large steel castings
How to overcome the shortcomings of quartz sand and significantly reduce the sand holes and pores of large and medium-sized
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Control of pouring and solidification process of large steel castings
“Pouring and solidification process” is a key process that has a significant impact on the quality of steel castings. More
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Computer simulation technology in the production of China large steel castings
Large steel castings have large size and long production cycle. They are generally produced in small batch or even single
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Heat treatment technology in the production of China large steel castings
After pouring of large steel castings, there are great differences in the cooling rates of different parts, appearance and core
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Casting technology in the production of China large steel castings
Large castings have long production cycle and complex processes. Generally, they have to go through many processes. Reasonable setting of
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Metal material smelting technology in the production of large steel castings
Large steel castings in the fields of nuclear power, hydropower, thermal power and metallurgical equipment have strict service conditions and
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The gap between China’s large steel casting production enterprises and foreign advanced enterprises
Compared with industrial developed countries, there is a big gap in the production of large steel castings in China in
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Current situation of large steel casting production enterprises in China
There are more than 30 large-scale casting production enterprises in China, most of which are large and medium-sized state-owned enterprises.
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Development trend of China steel casting industry in the next few years
1.With the expansion and transformation of some steel casting industries and the large investment and construction of local private enterprises,
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Development status of China steel casting industry
1.Mainstream enterprises refer to some former national enterprises, which make use of the advantages of equipment conditions and further carry
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Future development trend of China steel casting parts production
1. Talent training and platform construction The development of the industry is inseparable from the support of professional talents, especially
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Problems in the production of China steel casting parts
Although China is a large foundry country, it is not yet a powerful foundry country. Compared with industrial developed countries,
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Problems in the production of China steel casting parts
The strength, especially plasticity and toughness of steel casting parts are greatly reduced due to coarse grains, uneven microstructure and
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Study on heat treatment process of China steel casting parts
The strength, especially plasticity and toughness of steel castings are greatly reduced due to coarse grains, uneven microstructure and internal
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Study on casting technology of Chinese steel casting parts
Casting process is a process scheme to ensure that steel casting parts have complete shape, clear outline and no internal
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Study on modification and microalloying of cast steel parts in China
Modification and microalloying is one of the hotspots to improve the properties of steel casting parts for many years. Through
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Study on Alloying of China cast steel parts
As we all know, the performance of steel casting parts comes from casting materials, guaranteed by manufacturing process and improved
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Key technology and quality control of large cast steel cable clamp casting
The foundry has formulated the quality control inspection process according to the casting process. The owner, the general contractor and
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Effect of chilling system on solidification of steel castings
The chilling effect of the cold iron will change the local cooling rate of the steel casting, so that the
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Determination of riser number and position of steel castings
After analyzing the hot spot position and feeding channel of steel castings, the position of riser can be determined. In
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Determination of hot spot position and feeding channel of steel castings
Generally speaking, the riser should be set at the hot joint of steel castings, that is, the final solidification area.
Scientific
Shrinkage porosity and shrinkage cavity in steel castings
During solidification, the steel casting will produce liquid shrinkage and solidification shrinkage. When the feeding system cannot provide sufficient liquid
Scientific
Design of gating system for lost foam casting of cast steel valve body
According to the analysis of the original process scheme of the valve body, it can be seen that the improper
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Melting and pouring control of lost foam casting for axle housing of cast steel engineering
In order to ensure that there is no dead corner in the negative pressure inside the sand box, 5 air
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Lost foam casting process for cast steel valve body
Lost foam casting is a negative pressure full mold casting technology developed on the basis of vacuum sealing molding combined
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Casting technology of cast steel large gear for mining mill
According to the gear specification, the design structure of cast steel gear is divided into full circle structure, 1 /