In the next ten years, China's intelligent manufacturing equipment industry should firmly grasp the period of strategic opportunities for development, and follow the principle of “prioritizing innovation, breakthroughs in key technologies, integration of technologies, solid foundation, and multiple inputs†and face the transformation and upgrading of traditional industries. The needs of the emerging industry development, integration, integration of advanced manufacturing, information and intelligence technologies to achieve the automation, intelligence, leanness, and greenness of the manufacturing industry are the process of sensing, analysis, decision-making, control, and execution. Focus on the development:
1, automated complete production line:
Focus on the development of system integration of large-scale ethylene and large-scale PTA automated production lines with a capacity of one million tons or above, key automation equipment for large-scale coal chemical industry, key equipments for large-scale LNG production, storage and energy storage, large-scale long-distance natural gas transmission systems, high-efficiency cotton spinning, and short process dyeing and finishing Automatic production line; large-scale coal underground automatic comprehensive mining equipment and large-scale open-pit mine automation equipment.
2. Key basic components, components and general components:
Focus on the development of high-reliability force-sensitive, magnetic-sensitive sensors, new composites, optical fibers, MEMS, biosensors, instrument-specific chips, chromatography, spectroscopy, multi-purpose calorific value analyzers, mass spectrometry detection devices; high parameters, high precision, and high reliability Bearings, hydraulic/pneumatic/seal components, gear transmissions, and large, precision, complex, long-life molds; power electronics and variable frequency drives.
3, smart special equipment:
Focus on the development of the robotics industry; intelligent self-unloading power shovels for mines, intelligent full-face roadheaders, and intelligent integrated construction machines represented by rapid integrated flexible construction equipment; digital, intelligent, high-speed multi-function printing machinery; large-scale advanced and efficient intelligent Agricultural machinery.
4, intelligent control system:
Focus on the development of a comprehensive decentralized control system DCS, fieldbus control system FCS with fieldbus devices to achieve dynamic data exchange capabilities, programmable control systems PLC, advanced high-efficiency engines and other functions organic integration of logic control, motion control, analog control, etc. Its intelligent control system, new energy, new materials, energy-saving environmental protection and other emerging industries need a dedicated control system.
5, high-end CNC machine tools and basic manufacturing equipment:
Accelerate the implementation of the "high-end numerical control machine tools and basic manufacturing equipment," a major science and technology projects, strengthen the application of specific research results and industrialization process. Focus on the development of high-speed, precision, composite CNC cutting machine tools, heavy CNC cutting machine tools, CNC special processing machine tools, large CNC forming stamping equipment; heavy forging equipment, clean and efficient casting equipment, new welding equipment, large-scale clean heat treatment and surface treatment equipment, Non-metallic molding equipment, new material preparation equipment, high-end numerical control systems, numerical control machine tool functional parts, digital tool systems and measuring instruments.
6, precision and intelligent instrumentation and test equipment:
Focus on the development of high-precision, high-stability, intelligent pressure, flow, level, component meters and highly reliable actuators, smart grid advanced measurement instrumentation AMI, material analysis precision testing equipment and mechanical performance testing equipment, new non-destructive testing and Environment, multi-purpose heat value measuring instrument, safety testing instrument, national defense special test instrument and other kinds of test equipment.
Description
Lost Wax Casting uses molten materials to manufacture fused module,and then coat the module surface with multilayer refractory material.Until dry and curing,the module will be heated and burned out pattern materials,through high temperature molten and poured into molten metal,the castings will obtain after cooling and solidification.
Lost wax casting(also called by its French name,cire perdue)is the process by which a metal sculpture is cast from an artist`s sculpture.Now this ferrous metal casting process known as investment casting is a foundry technique with a little cutting or no cutting.Intricate works can be achieved by this casting process,primarily depending on the skills of the carvers.
Application of Lost Wax Casting
- This investment casting is used for the production of bronze handicrafts,aerospace,weapons and shipbuilding,petrochemical engineering,machinery manufacturing,household appliances and instrumentation.The materials include brass,aluminum and steel.
- The lost wax casting is not only suitable for various alloyed casting,but also for producing the complex and high-temperature foundry goods.
Features of Investment Casting
- The metal castings have high dimensional accuracy and fine surface roughness.The dimension is between CT4 and CT7,and the surface roughness is generally from Ra1.6 to 6.3um.
- Lost wax casting provides near net shape to lower material usage.
- The lost wax investment casting can reduce expensive machining operations and eliminate expensive weldments.
- Lost wax casting has the advantages of greater design flexibility,weight reduction,,low initial tooling costs and wide alloy selections to enhance part performance.
Investment Casting process
The metal castings can be made of two ways.One is the direct method which uses wax model itself,and the other is the indirect method using a wax copy of a model.These are the steps for the indirect lost casting process:- Model-making.The mold-maker creates an original model from wax clay or other materials.
- Wax.After the mold is completed,molten wax is poured into it and swished around until an even coating,usually about 3mm thick,covers the inner surface of the mold.
- Chasing.A heated metal tool is used to rub out the marks that show the parting line or flashing where the pieces of the mold came together.
- Spruing.The wax copy is sprued with a treelike structure of wax which will provide paths for molten casting material to flow and air to escape.
- Slurry.The wax copy is dipped into slurry of silica,then into sand-like stucco or dry crystalline silica of a controlled grain size.
- Burnout.The ceramic shell-coated piece is placed cup-down in kiln,whose heat hardens the silica coating into a shell,and the wax melts and runs out.
- Testing.The ceramic shell is allowed to cool,and then is tested to see if water will flow through the feeder and vent tubes as necessary.
- Pouring.The shell is reheated in the kiln to harden the patches and remove all traces of moisture,and then placed cup-upwards into a tub filled with sand.
- Metal-chasing.Just as the wax copies are chased,the casting is worked until the telltale signs of the casting process are removed,and the casting now looks like the original model.
Lost Wax Casting
Lost Wax Castings, Lost Wax Precision Casting, Lost Wax Casting Parts
QINGYUN HUIHUANG EXACT CASTING CO.,LTD , http://www.sdhhcasting.com