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Yindi Temperature Control Die Casting Standards
At Yindi, we take the issue of temperature control when it comes to die casting very seriously. We mainly use aluminum die casting and are highly experienced with keeping our materials and casting equipment at the most beneficial temperature for this kind of casting. In addition, we have thermal controls on our die casting machines to keep the suitable oil temperature, and our holding furnaces maintain the proper metal temperature at the die casting machine. Our die cast cells are designed to help us maintain extremely accurate temperature control over the entire die casting environment, alongside a team of metalworking engineers well-versed in critical temperature ranges and temperature control.
How do you choose auto die casting? With the rise of new energy vehicles, aluminum alloy and other lightweight materials are widely used in the production of chassis, auxiliary frame, motor housing and so on. The application of these new materials has also brought new processing challenges. On the other hand, most automakers outsource this kind of machining task to the auto diecasting company. Therefore, the search for efficient solutions to meet the growing demand for lightweight and electric processing of die casting auto parts has also become the focus of attention of the majority of auto diecasting company. YINDI MATRIX DIE-CASTING CO., LTD, as one auto diecasting company in China, with twenty three years’ experience in auto die casting, today would like to share you with some information about how to choose auto die casting.
First of all, let’s get to know some basic information about how auto die casting works. Through die casting machine, metal such as copper, zinc, aluminum or aluminum alloy is heated into liquid state, then is poured into the feed port of die casting machine. Through die casting machine, casting zinc, aluminum parts or aluminum alloy parts are limited by die casting, such parts are usually called die castings. Die castings have different terms in different places, such as die casting parts, pressure castings, die casting aluminum, die casting zinc, die casting copper parts, copper new die castings, aluminum die alloy castings, aluminum alloy die casting parts, etc.
Second of all, the quality of the new energy automobile pressure casting includes the appearance quality, the internal quality and the quality of use. The appearance quality refers to the roughness, surface quality, dimensional tolerance, shape-position tolerance and quality deviation of the casting surface, and the internal quality refers to the chemical composition, physical and mechanical properties of the casting, the quality of use refers to the ability of the casting to meet the requirements and the working performance, the wear resistance, the corrosion resistance and so forth. The control of die casting surface temperature is very important for the production of high quality new energy automobile die castings. Improper die casting temperature will also lead to casting size instability. In the production if the middle ejection casting causes any deformation, it will result in hot pressure, adhesive die casting, surface depression, internal shrinkage hole and hot bubble and other defects. When the mould temperature differences, it will affects the variables on the production cycle such as filling, cooling time and spraying time, and so on.
The last but not the least, the production of internal auto die casting must be achieved in a timely manner. Otherwise, when the pressure is increased, the casting is already solidified, the casting cannot be realized. The start time of the boost should be adjusted organically. If the starting pressure of the charge is too small to cause the casting to be filled with poor quality, a lot of problems arise from the surface quality and the outline of the casting. If the start of the pressurization is too late, the casting is already solidified, and the effect of the pressurization is not. So it is also essential that the beginning of the boost start time is also critical. If there is a three-curve display on the machine, the adjustment can be viewed from the curve. If no curve is displayed, the quality of the casting can be carefully observed.
What is die casting
In the easiest terms, die casting is a process for creating metal components by forcing molten metallic beneath high pressure into aluminium die casting molds, recognized as dies. The dies are made from aluminum and contain the pattern for the metal parts. After the molten metal is pushed into the aluminum molds, it's left to cool and harden. Then, the metal is removed in what's known as a "casting gate". The casting is the name for the metal parts that have been created and removed in one piece out of the mold. The individual metal parts are then trimmed from the casting gate, and additional operations and finishing are done as needed to create your finished product. Die cast parts can be simple or complex — regardless of which you need, all of them come with a variety of finish options.
Die casting tooling
The key to a successful die casting is a good tool design, so it is essential that both the die caster and the consumer are well-versed in die casting skills and how they suit project requirements. A die casting die is a custom-engineered, multi-part piece of equipment made from high quality, heat-treated steel. The device is composed of two halves – a cover die (which is stationary) and the ejector die (which the die casting machine moves to meet the cover die). As soon as the two halves meet, the molten metal is injected into the tool, where it is held under pressure till it solidifies. After solidification, the metal is ejected, creating an almost net shaped part in seconds.
Let’s get to know some information about the air tightness test of die casting auto parts. As an integral part of the automobile, die casting auto parts are concerned about its air-tightness by the auto diecasting company. The products in the die casting auto parts field need special air-tightness treatment, and the state also has special grade requirements, meanwhile, different products have different detection methods. The research on the air tightness of the die casting auto parts is carried out by YINDI MATRIX DIE-CASTING CO., LTD, and the equipment customization is made according to the different detection requirements, and a good achievement has been achieved. So let us share you some information about the air tightness test of die casting auto parts.
First of all, analysis of the difficulty of detection
The shape of the die casting auto parts as a whole is irregular. The middle fovea is round, there are three contact pieces in there. There is a connector below, irregular long column. And three contact blocks below are used to connect zero devices in other parts of the car. The shape of automobile die casting is made of polygons and external waterproof shell, and there is a pair of interface extending in front of it, and the overall permeability is strong. The irregular shape makes it more inconvenient to detect the air tightness by using the shell material with high compactness, so it is necessary to use the mould to assist in the casting. When testing, it is necessary to take into account its non-damage, select the corresponding tooling, auto die casting, and pay attention to the calculation of its calculation method, pressure and software algorithm.
Second of all, the air-tightness detection process.
In our test, the shape of the two products tested is relatively different, the mould tools used are also different, but all need to be carried out with the help of moulds. Firstly, the mould prepared for auto parts is casted according to the shape of the accessories. Then, put the accessories into the mould, close to the inner wall of the mould, leave a port on the right to place the alignment column under the accessories. When the upper and lower moulds are closed, the right testing instruments are stuck to the opposite interface. In this way, it’s more conducive to the conduct of testing. Automobile die casting modeling is special, multilateral shape plus its overall permeability is higher. Due to the fact that its custom mould is more according to its overall shape to cast, the bottom of the interface to the right side into the mold, at this time the die casting as a whole and the die inner wall stuck very closely, the upper and lower die closed, the right instrument stuck to the interface, the degree of sealing is high. In this way, it’s also more conducive to make sure about the accuracy of testing. Before the detection begins, the parameters are set on the instrument. After pressing the start key, the instrument will fill the mould with dry and impurity-free gas, then disconnect the compressed air supply, stabilize its pressure for a period of time, and monitor the small change of air pressure in the detection environment after a given measurement time. The sensor transmits this information to the detection system. Finally, through a series of operations, the leakage value of the gas can be obtained, and its gas tightness value can be detected according to the leakage value.
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