3. Alloy Casting
The level of domestic casting equipment is also very far apart. The oldest casting equipment in the country has the level of iron mold casting in the 40s and advanced hydraulic semi-continuous casting. The crystal structure of the iron mold casting rod is poor, and there are many slag and bubbles in the casting rod, so the quality of the casting rod is poor. Now the basic casting is horizontal (also known as continuous casting) and semi-continuous casting, semi-continuous casting, most wire rope transmission, and the best hydraulic transmission. The length of the semi-continuous casting rod varies from 3 to 4 to 8 meters. Semi-continuous casting is pit type, casting side down, all around of cold water cooling. Because the water cooling is uniform around, the casting rod crystal structure is uniform and fine. But the wire rope downward transmission, as smooth as hydraulic transmission, hydraulic casting rod surface than other casting rod surfaces are smooth. The smooth surface of the casting rod is one of the prerequisites for extruded profiles. The surface of the casting rod is rough with other methods. To ensure the quality of the profile, sometimes the casting rod is cut first, and the car goes to the rough appearance of the casting rod. Now commonly used semi-continuous casting mold, for advanced, hot top-level casting mold, the characteristics of this casting mold can be cast several to dozens of roots at a time. At the same time, casting quality is good with high-quality 6063 aluminum alloy casting rods, so it is possible to produce a good aluminum profile. You can't make a good aluminum profile if the original old casting equipment cannot cast a good casting rod. There are many aluminum factories in China. They do not have the equipment to produce aluminum rods but buy 6063 alloy rods from electric aluminum plants or other factories. In such aluminum factories, aluminum quality is in the hands of casting rod production factories, and the quality of aluminum produced is difficult to achieve stability. It is a small investment and low production costs with backward equipment than advanced casting equipment, which is also one of the reasons why aluminum sales prices are different.
4. Aluminum Profile Extrusion
In China, the kinds of extruders are various, and the wide range of classes and high levels is the most in the world. Generally, it is believed that the Japanese, the United States, and German extruders are better. Good and bad extruders, the same casting rod, and extruded profile quality are not the same. We often see building aluminum doors and Windows with 6063T5, which is an American brand internationally common. The Chinese brands LD31RCS.T5 and RCS both indicate the state, indicating the state of air cooling quenching artificial aging. The quenching of metal is from high temperature to low temperature suddenly. For example, the blade of a steel knife is hard and sharp only when it is quenched in water, and the quenching of aluminum is also water-cooled or air-cooled. The 6063 profile used in architecture is air-cooled, and the quenched aluminum is placed in the aging furnace for a certain time. The internal crystallization of aluminum is rearranged, and the mechanical strength is improved. Among all alloys of metals, only aluminum alloys have an aging state.
Guangdong Zhonglian aluminum profile Co., Ltd. is a manufacturer of aluminium profile with well-equipped testing facilities and strong technical force. With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in construction industry and other industries.Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
