For example,sand mold precision casting,mass production of the factory should create conditions to adopt advanced technology modeling,core making method.The production line of the old shock type or shock type molding machine is not high enough,the labor intensity of workers is big,the noise is big,do not adapt to the requirements of mass production,should be gradually transformed.
Since its appearance,the casting material Baozhu sand has been widely concerned by the casting industry,widely used in resin sand(furan resin,phenolic resin),sodium silicate sand(organic fat,CO2 hardening),coated sand.Suitable for all kinds of casting methods such as:V method,VRH,lost not only can greatly improve the quality of castings,easy and deoxidization,with sand process easy and convenient(local with sand sheet small batch,the large cast steel plant)with little or no artificial mixing with sand,can save the most casting coating,especially suitable for producing high quality castings.Good fluidity and filling,good formability and casting strength.
Instrumentation is used to detect,measure,observe,calculate various physical quantities,material components,physical parameters and other instruments or equipment.Pressure gauge,measuring instrument,microscope,multiplier are all instruments.In a broad sense,instruments can also have automatic control,alarm,signal transmission and data processing and other functions,such as pneumatic and electric regulating instruments used in the automatic control of industrial production process,as well as distributed instrument control system are also instruments.
Talent shortage.In the process of the development of China's casting technology,what is most lacking is not technology,but talents.The main reasons for the brain drain are the low salary and poor working environment of domestic casting enterprises.
2.Small enterprise scale.Many foundry enterprises,small scale.There are many working foundry enterprises,and many of them are small in scale and relatively backward in technological level,resulting in low labor productivity,low product quality,and sometimes safety accidents and vicious competition.These problems hinder the development of enterprises
The condition of complete deoxidization is:choose dry and clean charge,add ferro manganese first after melting,then add ferrosilicon deoxidization,then add calcium silicon deoxidization,then stop power for 2min,then add aluminum final deoxidization after insulation casting.Immediately after pouring,add wood chips or waste wax to recover the box for sealing and cooling.