Adjustable Metal Belt End Tip With Prong

fay@pride-cnc.com
Block D, Dianlian Science Park, Matian St., Guangming District, Shenzhen 518106, China

+8613477665385

 13477665385

The production cost of zinc alloy die casting is low. Compared with aluminum, magnesium, copper and other die-casting materials, zinc alloy melting point is low. In the case of the most commonly used Zamak 3, the production temperature is around 440C and the melting fire consumption is low. Mainly using the hot room die caster production, the advantage of the hot room machine is that the production cycle is short and the equipment is relatively simple (because the pressure chamber soaked in the solution, no additional time to the soup and pressure chamber exhaust time, nor to the soup equipment.) In addition, zinc alloy solidification time is very short, no third-stage boost, the pressure-shooting system is simpler. )。 The mold life is long (up to a million modes). The pressure-shooting parameters of the hot room machine are few (although there is more charger temperature adjustment, but there is no three-stage boost, the first stage travel is very short, the second speed is lower, the release is also simpler).

Zinc casting polishing is easy, surface plating is easy, color and effect selection is very many, the overall cost is also the lowest. Therefore, many surface quality requirements of hardware accessories such as bathroom, doors and windows, locks, ready-to-wear, leather goods, stationery, furniture, electrical appliances, decorations, etc. , are used in large numbers.

However, zinc die casting also has many production disadvantages. Due to the high density of the zinc alloy (Zamak s3 is 6.7g/cc) and the limitations of the equipment, the zinc alloy die castings are mostly small and medium parts. Most zinc die castings are produced in hot chamber die casters of 250T or less. In addition, zinc alloy on heavy metal content has strict requirements, otherwise there will be intercrystalline corrosion. Zamak 3 zinc ingots have the following specifications: iron <0.075 percent, lead <0.004 percent, cadmium <0.003 percent, tin <0.002 percent. Therefore, in the recovery process of zinc alloy castings to be carefully controlled, the proportion of recycled materials can not be used high, to avoid heavy metal pollution. Therefore, too much casting surplus ratio and high scrap rate have a great impact on the cost structure.

Production process, because it is mainly small and medium-sized parts, and to high surface finish-based, zinc die-cast filling time is very short, less than two percent of seconds. In such a short charging time, it is difficult to drain the air from the cavity. In particular, pores close to the surface of the casting cause foaming during surface treatment. For electroplating parts with high-gloss requirements, any small defects can be easily exposed, resulting in a particularly large loss of waste.

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