Q:What material is the material used in precision casting? What is the raw material?

The common method of precision casting is casting, also known as the lost wax casting, with paraffin as it looks, with quartz sand shell, the shell after hardening, melted paraffin after the formation of the cavity, drying after pouring liquid metal, precision casting solidification will get complicated shape and smooth surface.Precision casting materials used, the most common cast steel, cast iron and bronze, they used the material and general steel and iron and copper raw materials are the same, the key is the special casting method, high surface precision castings.

Q:What's the difference between part drawings?

When choosing, it should be chosen according to the cost and the condition of use

Q:How to distinguish forging hub, casting wheel hub?

Further, because the forging wheel structure, can bear high stress, so in the design, it can design some of the more lively thin spokes, freedom of design is higher but relatively, but the price is casting forging wheel hub is much higher, which are basically used in pay attention to control on high-end cars. The high performance super run, all without exception is used. In case of forged wheels Tiida 08 years, has produced a version of the sport, with the NISMO (Nissan's refit factory) 16 inch forged aluminum wheels, a price of 2500 yuan! The original 16 inch Sylphy cast aluminum wheels for 600 yuan / month, the difference is big, remarkable

Q:What are the differences between casting, forging, stamping and die casting? What are the machining processes?

Let's say it in plain vernacular.Casting: the metal solution is directly injected into the casting mold to form a certain shape of metal forming process. The quality is a little bit worse.Die casting: it is a kind of casting. If the solution flows into the mold naturally, it is possible that the casting will cause defects in the pores, so the injection of the melt with a certain pressure will reduce the defects accordingly.Forging: casting or other work, after a beat beat or other pressure shock and other ways to get a better processing strength. The products thus obtained are superior in performance and strength to the casting. For example, the blacksmith, is the traditional forging process.Stamping: that is, the shape of the object will be placed under the stamping machine, stamping machine is equipped with mold, punch out of the mold design products.

Q:What is the most advanced casting method?

EPC casting process is one of the world's most advanced, is known as a revolution in the history of the casting, twenty-first Century is "green intensive casting is the main way, will play an increasingly important role in foundry production, EPC casting or negative compaction (EPC). Is the use of expandable polystyrene (EPS) foam as raw materials, according to the volume of effective and reasonable combination of sand box model beam, special paint coating, after drying with water, binder and other additives in negative pressure dry sand sand box casting method, the casting metal liquid in proper vacuum tight microquake after the finish, prepared by the method of casting surface precision, has no burr etc..

Q:Note that is not upgraded, casting, such as the 4 sacred explosive weapons, there is a "foundry" that greatly please advice about trouble with, thank you.

Sacred equipment such as dragon knife, and Qinglong nuclear forging synthesis really Qinglong knife, and other is India's sacred nuclear synthesis, the synthesis of NPC in the NPC below the collar Deputy task, is also the lost coin that led the task, in fact this is the mid end equipment, casting is B level

Q:What kinds of casting do you have?What kinds of casting are there?

The ordinary sand casting, including wet sand, dry sand and sand. The 3 kinds of chemical hardening special casting, special casting press molding materials can be divided into natural mineral sand as the main materials (such as casting, mud casting, casting, vacuum casting, shell casting workshop, ceramic mold casting special casting and casting etc.) with metal as the main cast materials (such as metal casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.)

Q:Many units recruit graduates of these directions, they call this professional material forming and control, but I think this is also the field of metal materials engineering employment ah!

Belonging.Metal material engineering subjects: the main courses of materials science and Engineering: metallurgy, materials engineering, material thermodynamics, mechanical properties, metal technology, metal materials, heat treatment, solid phase material analysis technology, optical technology, metal materials, materials processing technology and equipment, computer in material engineering application.The main practical teaching links include metalworking practice, cognitive practice, production practice, curriculum design, professional experiment, computer application and computer practice, graduation design.Major experiments: metal experiments, physical and mechanical properties of metal materials, phase transformation and heat treatment of metal materials, etc.

Q:Tidal mold sand, clay sand, water glass, coated sand, resin sand",

The binders are plain clays or bentonite. Because of the need to add water to the sand mixing process, it is called sand mold sandWater glass sand binder is sodium silicate, usually by blowing carbon dioxide hardening or hardening agent hardening

Q:Why is the strength and shape of nodular cast iron higher than that of grey cast iron and worse than that of gray iron?

The graphite in spheroidal graphite cast iron is spherical, and the graphite in the gray iron is in flake shape. Compared with flake graphite, spherical graphite, destructive effect on the matrix separation effect, stress concentration degree is relatively small, relatively small for the effective bearing area decreases, the substrate can get more fully, so the strength of ductile iron and plastic (mechanical properties) higher than that of grey cast iron.The flow of nodular cast iron is the iron, shrinkage is relatively large, more difficult to control the process of gray iron (spheroidization and inoculation), so a difference of gray iron casting