Tungsten and cobalt are important additive elements for high-performance steel, but a large amount of waste water is generated during the production and smelting of these metals. The waste water contains high-concentration salt substances, high-concentration ammonia nitrogen and some heavy metals, e ...
The rapid repairing technology is to control the appropriate slag composition, use the high melting point mineral content of the slag after tapping, and add a proper amount of pig iron to make the slag, pig iron and the furnace lining become a whole, to achieve the effect of repairing the furnace, b ...
Oxygen and nitrocarburizing treatment can be carried out in a pit carburizing furnace, using liquid ammonia, oxygen and nitrogen as infiltrating agents. The inner wall of the furnace pot, the inner surface of the furnace cover and the loading frame are all coated with water glass graphite paint and ...
The clean technology includes two aspects: improving the cleanliness of steel and reducing the load on the external environment. It is a production technology that consumes waste iron and steel materials from the society and recycles them. It does not consume non-renewable resources and uses the cle ...
The history of German industry tells us two truths: First, without own property rights and core competitiveness, there is no future in imitation and low prices alone. Second, if you do not innovate, you will really die. This is the lesson of the German enterprise's blood. Innovation requires awarene ...
Quenching: heating at 875~925ºC temperature, holding for 2~4h, quenching into oil to obtain martensite matrix structureTempering: high temperature tempering at 550~600ºC to obtain tempered sorbite structure + a small amount of ferrite + spheroidal graphite ...
However, now that some small companies have expanded their furnace capacity and installed continuous casters and rolling mills, "small workshops" have become intermediate frequency furnace steel plants. Should such capacity be removed by administrative means, or should it be dealt with by laws and r ...
Since the smelting of ultra-low phosphorus steels such as 9Ni has strict requirements for the final phosphorus content of the converter steelmaking, it is generally necessary to achieve a final phosphorus content of 40×10-6 in the converter. Therefore, Nangang takes pipeline steel as the research ob ...
Regulating valve, also known as control valve, in the field of industrial automation process control, by receiving the control signal output by the regulating control unit, using power operation to change the final control element of the process parameters such as medium flow, pressure, temperature, ...
Traction gears for rail transit locomotives are important parts in the traction transmission of electric locomotives and electric drive diesel locomotives. The materials of locomotive gears can be roughly divided into three categories: quenched and tempered steel, nitrided steel and carburized steel ...
Mainly studied the relationship between furan resin sand's usable time, mold release time and strength under low temperature environment, and determined the appropriate sand temperature and resin curing agent ratio to guide workshop production. ...
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The thread cutting process depends on the structure of the machined parts and the CNC machine tool u
Oval gears are widely used in automatic machinery and instrument industries, and are a type of non-c
The cylinder telescopic sheath is a protective component that is installed on the oil cylinder, cyli
The manufacturing cycle is long. Operators are prone to fatigue. Once a failure occurs, it often tak
The Wu Steel Works has two workshops, one steelmaking workshop and the second steelmaking workshop.