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The process cycle for die casting mold

13 Oct 2017 - die casting,die casting mold,die mold

The process cycle for die casting 


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The process cycle for die casting mold and die mold consists of five main stages, which are explained below. The total cycle time is very short, typically between 2 seconds and 1 minute.


    1. Clamping 

      - The first step is the preparation and clamping of the two halves of the die. Each die half is first cleaned from the previous injection and then lubricated to facilitate the ejection of the next part. The lubrication time increases with part size, as well as the number of cavities and side-cores Also, lubrication may not be required after each cycle, but after 2 or 3 cycles, depending upon the material. After lubrication, the two die halves, which are attached inside the die casting mold and die mold machine, are closed and securely clamped together. Sufficient force must be applied to the die to keep it securely closed while the metal is injected. The time required to close and clamp the die is dependent upon the machine - larger machines (those with greater clamping forces) will require more time. This time can be estimated from the dry cycle time of the machine.
    2. Injection 

      - The molten metal, which is maintained at a set temperature in the furnace, is next transferred into a chamber where it can be injected into the die. The method of transferring the molten metal is dependent upon the type of die casting mold machine, whether a hot chamber or cold chamber machine is being used. The difference in this equipment will be detailed in the next section. Once transferred, the molten metal is injected at high pressures into the die. Typical injection pressure ranges from 1,000 to 20,000 psi. This pressure holds the molten metal in the dies during solidification. The amount of metal that is injected into the die is referred to as the shotThe injection time is the time required for the molten metal to fill all of the channels and cavities in the die. This time is very short, typically less than 0.1 seconds, in order to prevent early solidification of any one part of the metal. The proper injection time can be determined by the thermodynamic properties of the material, as well as the wall thickness of the casting. A greater wall thickness will require a longer injection time. In the case where a cold chamber die casting mold and die mold machine is being used, the injection time must also include the time to manually ladle the molten metal into the shot chamber.
    3. Cooling 

      - The molten metal that is injected into the die will begin to cool and solidify once it enters the die cavity. When the entire cavity is filled and the molten metal solidifies, the final shape of the casting is formed. The die can not be opened until the cooling time has elapsed and the casting is solidified. The cooling time can be estimated from several thermodynamic properties of the metal, the maximum wall thickness of the casting, and the complexity of the die. A greater wall thickness will require a longer cooling time. The geometric complexity of the die also requires a longer cooling time because the additional resistance to the flow of heat.
    4. Ejection 

      - After the predetermined cooling time has passed, the die halves can be opened and an ejection mechanism can push the casting out of the die cavity. The time to open the die can be estimated from the dry cycle time of the machine and the ejection time is determined by the size of the casting's envelope and should include time for the casting to fall free of the die. The ejection mechanism must apply some force to eject the part because during cooling the part shrinks and adheres to the die. Once the casting is ejected, the die can be clamped shut for the next injection.
    5. Trimming 

      - During cooling, the material in the channels of the die will solidify attached to the casting. This excess material, along with any flash that has occurred, must be trimmed from the casting either manually via cutting or sawing, or using a trimming press. The time required to trim the excess material can be estimated from the size of the casting's envelope. The scrap material that results from this trimming is either discarded or can be reused in the die casting mold and die mold process. Recycled material may need to be reconditioned to the proper chemical composition before it can be combined with non-recycled metal and reused in the die casting mold and die mold process.


 Alpine mold Engineering Ltd.


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About Us:

Alpine mold specializes in high quality die casting mold and die mold with more than 100 employees more than 20 years.At the beginning, we produced the die mold and the die mold parts for domestic companies, or some international trade companies. Now we are concentrated in international market. After more than 15 years’ development in this industry,we know the international die mold standards very well, such as: HASCO, DME, MISUMI, LKM. Until now, we have produced more than 5000 sets of die mold and have been molding millions of die mold parts for Sony, Toshiba, Volvo,Gree, Midea! Our products reach to the range of electronic products, automotive products, home appliances and so on in aluminum,zamak 3,zamak 5 etc materials 


Equipped with the most advanced software such as ProE, UG, CATIA, Solid works and Moldflow for designing, analyzing and manufacturing, Alpine Mold has imported a lot of sets high precision die casting mold and die mold machines from German and Japan, including High Speed CNC, EDM, Wire Cutting Machine, and CMM Inspection Machines and so on to guarantee the die casting mold and die mold with high standard product quality. 


Alpine Mold persists in the die casting mold and die mold with higher quality, lower cost,punctual delivery as the primary business philosophy. Based on professional, people-oriented, and customer-centered management, Alpine Mold takes "customer - oriented, Quality first" as company`s aim, committed to provide clients the die mold with high quality products and overvalued services by right of advanced technologies, scientific management, and continues improvement.


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FAQ

Q1. What is your terms of packing?
A: Generally, we pack the die casting mold and die mold in wooden box and pack the products in carton. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.


Q2. What is your terms of payment?
A: Mold payment : T/T 40% deposite with po, 30% after first trial shot, 30% before shippment;
Part payment : T/T 40% deposit with po, 60% before shippment;


Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU or according to customer's requirement.


Q4. How about your delivery time?
A: Generally, it will take 25 to 50 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.


Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.


Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery


Q8: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;

   2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.


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Name:Sylia

WhatsAPP:15171954993

Skype:sykia.alpinemold

Tel:+86-15171954993

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