The difference between Die Casting and Die Casting Forging

The difference between Die Casting and Die Casting Forging

1. Proposed to distinguish between die casting and die casting die forging (liquid forging) pieces, at least two types of factory units makes sense:
First, some domestic intermediate institutions, including the components and the whole factory. They undertake the external components, and then find some manufacturers in the country. Since both the production process of rough vary, the current market price is not the same, the latter generally offer higher than the earlier ones. If someone can not distinguish between these two kinds of rough, in the undertaking business offer low-cost time as press reported out of the casting, there will be operational errors, affecting even a loss of benefits; 2 is a professional manufacturer of Casting and Forging. That the latter is due to die-casting, can be produced by conventional die-casting process, then their business down. In the opening of the die-casting mold, the final production of die casting process is basically due to the existence of rough Shrinkage defects or surface defects, rough failure, ultimately causing undue damage.
2. Die-casting die forging, liquid die forging and casting technology with forging the relationship between the
Even the nature of casting forging process, that is, with a piece of equipment, in the same set of mold, its casting and forging a row to complete filling. Continuous casting process is not even the forging of a new process, its principles have a long history. The most typical and most simple casting with forging process, is that we are familiar with liquid die forging (forging melt soup) process. The die forging process, the image that is a higher degree of automation to use special equipment, to produce structures as complex as with ordinary die-casting of liquid die forging. Because of this, die-casting die casting forging parts and ordinary in appearance, we were not easy to come out. Even with the continuous casting process produced by the rough forging similar quality, is "first, after casting forging" process. After the first casting forging process we are very common: rough a total production of two sets of molds, a set of common metal for hand-casting, another set is used to punch the use of friction or hydraulic machine to complete the forging. Forging die-casting process is only in the international arena in recent years, the rise of technology, due to patent restrictions, the process in China is still rare. Guangdong Zhaoqing Hong Yin Electrical Technology Co., Ltd. is a pioneer in the introduction of this technology, the external production. Have been produced including the sports forging piston, a small cylinder, extreme sports motorcycle frame (6061 material), small wheels, including a variety of rough.
3. Die Forging Process Overview
Die forging process is a dedicated forging die-casting machine to complete the process. The basic process is: first, low-speed or high-speed liquid metal mold filling into the mold cavity, the mold cavity are active surface, it is with the pressurized cooling process of liquid metal forging, both the elimination of the shrinkage reduction of rough Song defects, also rough up the internal organization of states forging broken grains. Blank comprehensive mechanical properties significantly improved. In addition, the process produced a rough outer surface finish to achieve 7 (Ra1.6), such as the cold extrusion process, or machined out of the surface, have a metallic luster. Therefore, we will die forging process known as the "ultimate forming process" than "no cutting, less margin forming process," goes a step further. Another advantage of die forging process is characterized, in addition to the traditional casting material can produce, it also can be used deformed alloy, forging alloys, to produce the structure is very complex parts. Grades of these alloys include: Hard aluminum superhard alloy, forging aluminum alloy, such as LY11, LY12, 6061,6063, LYC, LD, etc.). The tensile strength of these materials than the regular cast alloy high nearly doubled for the aluminum alloy car wheels, frame, etc. hope that the impact-resistant material with a higher intensity of production of parts, have a more positive meaning.
4. How the distinction between these two kinds of rough
From the appearance, we are difficult to distinguish between these two processes produced by the rough. If you see a post-processed parts, the more difficult to distinguish the. Therefore, we can only reverse analysis to determine: First, die-casting in general is "structural parts" rather die forging is a "functional pieces." "Structural parts" and the "functional parts" is relative. The latter usually mean it takes to withstand impact, temperature, pressure, strength (force), and the need to surface treatment (such as anodic oxidation), heat treatment (solid melting enhanced) and so on. Typical products are the engine block, wheel hub, piston, connecting rod, brake shoes, pneumatic or hydraulic valve (such as the common three five-way valve), etc.. The former, such as door frames, instrument panels, engine housings and so on. Second, to judge from the material composition on. Because the die-casting classes are generally cast alloy, for other grades of the alloy, is often produced by die forging process. Third, from the rough handling of the outer surface of its requirements to judge. Such as aluminum die casting, because it contains silicon, and die-casting process produced a result of the rough, outer surface of the micro-pores (commonly known as "Watermark"), this material surface after anodic oxidation treatment will have a "black spots." Therefore, the rough if required anodic oxidation, then the rough will not be an ordinary die-casting process technology. 4 is judged on the microstructure. Die Casting and Die forging parts in metallography, we are easily distinguished. The former is a branch crystal cast structure, which is evenly broken grains forging state organization.