When it comes to die-casting zinc alloys, there should still be a significant number of individuals who are not familiar with the technology behind this process. The die-casting of zinc alloys is a casting method that is utilized frequently. Die-casting manufacturers use high-pressure methods to force molten zinc die casting manufacturer metal pressed into metal molds with complex shapes. This casting method is widely used in a variety of fields today and has been around for a long time. There are certain circumstances that can arise during the process of opening the mold for zinc alloy die-casting, and these can lead to certain flaws in the finished product.
After that, I will discuss the reasons behind some prevalent problems as well as potential solutions to those problems. On the surface of castings, there are often patterns as well as traces of the metal flow. Molten metal may splash as a result of the following causes: the flow opinion leading to the inlet of the casting is too shallow; the injection specific pressure is too high, which causes the splashing. The method of adjustment is to make the gate runner deeper and to lower the injection specific pressure. On the inner surface of the cavity there are scratches, pits, and cracks, and the outer surface of the cavity has fine bumps caused by the rough surface. The surface of the casting has fine bumps caused by the rough surface. Polish the cavity; replace the cavity or repair it, there are push rod marks on the surface of the casting, and the surface is not smooth but rough. The adjustment method is polishing the cavity.
The length of the push rod could be shorter. The surface of the cavity has a rough texture, or there are miscellaneous items in the cavity. Make the necessary adjustments to the length of the push rod. The sundries and oil stains can be removed from the cavity if you polish it. On the surface of the die casting, there are small holes or pores. The reason for this is that there is an excessive amount of lubricant, and the vent hole is clogged. The solution is to reduce the amount of lubricant that is being used, as well as to add more, and to fix the vent hole. Because of the intense competition in the market, natural selection will inevitably take place; therefore, it is of the utmost importance to produce superior goods in order to capture a larger share of the market. Zinc alloy die-casting mold manufacturers need to continually improve their die-casting technology, understand the causes and solutions of these common shortcomings in the process of zinc alloy die-casting, and then pay attention to these links in the process of zinc alloy die-casting mold opening. This is necessary in order for the manufacturers of zinc alloy die-casting molds to remain competitive. Make an effort to prevent the occurrence of shortcomings, produce better products, draw in more customers, and achieve higher levels of profitability.
Because the products that are die-cast by the die-casting machine have a high temperature and some products zinc die castings are easy to stick to the mold while die-casting, lubricating oil needs to be sprayed during production. This will result in the product being oily after die-casting, but it is necessary in order to prevent the product from sticking to the mold. Because of this, the requirements for the conveyor belts used for metal die-casting products include high temperature resistance and oil resistance. However, the conveyor belts used for general belt conveyors are unable to have both high temperature resistance and oil resistance, so high temperature resistant canvas conveyors are used instead.
High temperature resistant canvas belt conveyors use heat resistant conveyor belts. These belts are made of multi-layer rubber cotton canvas or polyester canvas covered with high temperature resistant or heat resistant rubber and are bonded together using high temperature vulcanization. These belts are suitable for conveying hot coke, cement, slag, and hot castings, amongst other materials. Different accessories are added in accordance with the products of the customer as well as other factors. In the metal die-casting workshop, the products have a high temperature after the casting process has been completed. Bringing down the temperature of the products on the conveyor belt can be accomplished by properly installing a cooling fan. Skateboards are attached to the uppermost part of the rack, and the product box can be automatically accessed by the skateboards. When the product has reached its capacity, the staff will remove it and move on to the subsequent step. You also have the option to install a die-casting manipulator, which eliminates the need for any manual CNC machining services labor to remove the finished product from the die-casting machine and place it on the high-temperature canvas conveyor.
Why is it that castings can't have their surfaces anodized?
Why is it that castings die casting manufacturer can't have their surfaces anodized?.
Permit me to begin by discussing the actual work experience I have had. At my very first job, I was in charge of both mechanical and chemical products that were used for surface treatment. Castings can also have a surface treatment known as anodizing applied to them, and at that time, all of us were mass-produced. Because die-casting dense material is very different from aluminum extrusion, forging, and stamping, and has a high silicon content, die-casting parts are not anodized in most cases. This is due to the fact that die-casting dense material has a lot of differences. After the anodizing process, there will be a significant amount of floating dust on the surface, which will have a negative impact on the anode's surface quality.
During that time, we were working on perfecting the anodizing procedure for ADC12 die-casting parts. During the removal of silicon in the pre-treatment phase, we utilized hydrofluoric acid (HF), but we were only just able to finish the anodizing treatment. The resulting black had a matte appearance, was slightly yellowish, and produced a very unsettling feeling. Additionally, because the anode layer of this die casting has poor resistance to wear and corrosion, anodic treatment is not recommended for use on this material. The die-casting aluminum ADC6 is an aluminum-magnesium alloy, which makes it much simpler to anodize. Additionally, the appearance of the surface treatment is significantly improved in comparison to that of ADC12 due to the fact that the silicon content of ADC6 is generally less than 1. 0%. We use a treatment known as hard anodic oxidation in order to improve the anode layer's dependability and quality in areas such as wear resistance, corrosion resistance, weather resistance, and other similar areas. The anode pretreatment makes use of hydrofluoric acid to remove ash. The anodic oxidation tank makes use of monoacid sulfuric acid reagent. The parameters are set to low temperature and high pressure. The film thickness is high film thickness, 100um+. The anodic oxidation bath should be added to frequently for maintenance and bath rebuilding.
There is a wide range of prices for product molds offered by domestic manufacturers because of the disparities in scale, quality, and service that exist between these businesses. When it comes to choosing die-casting factories for collaboration, customers run into some difficulties. The size of the die-casting mold, the amount of material used for the larger-sized mold, and the cost of the same material will all increase proportionally as a result of this. The second factor is that it is determined by the structure of the mold. The mold for the zinc alloy die-casting process has a complicated structure. The amount of difficulty in the production process will increase proportionally with the number of corners and corners that there are. A higher cost will inevitably follow in the wake of an increase. The material grade of the mold is yet another factor to consider. Molds for zinc alloy die-casting can have their useful life extended by using higher-quality materials, which can also lead to an increase in the overall productivity of the manufacturing process. This is of utmost significance in the fast-moving consumer goods industry, where the value of products depreciates over time, rendering them less desirable. For this reason, zinc alloy die-casting molds made of high-quality materials are the most cost-effective option from a fundamental perspective.
