What Is Die Cast Molding?

The die casting method is used to manufacture things like toy cars.

Used in a variety of industrial, commercial and consumer products, die cast parts can be found in many common items like cars and toys. Created by placing molten metal into pressurized steel molds the die cast pieces can be very complex, and because of the reliability of the technology, identical parts can be manufactured with great accuracy.

Die Cast History

The mid-1800's saw the development and use of pressure-injected die casting, but the technology was limited for the first 20 years to the production of printer's type and the use of tin and lead. By the end of the 1800's other shapes and parts, like phonographs, began to be produced using alloys like zinc, aluminum and magnesium. These, as well as magnesium and copper, remain popular die casting metals today.

Types of Die Cast Methods

There are two predominant methods of commercial die casting. The hot chamber and cold chamber methods both utilize injection systems, but in different ways. The hot system is used for metals with low melting points such zinc, copper and lead. The injection system itself is immersed in a bath of molten metal where it then fills with the liquefied metal. The cold chamber method is used for metals with higher melting points like aluminum. A manual or automatic ladle pours the molten metal into a cylindrical sleeve and is then sealed under pressure to cool.

Die Cast Advantages

The die casting technique is more useful than other production methods because it creates durable, identical materials and parts in more shapes and types than what is capable by other manufacturing processes. The accuracy of the die casting process, as well as the strength and easy assembly of its finished products, makes it an efficient commercial manufacturing method that is valuable in a wide range of industries.

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How to Find Quafiyied Plastic Injection Molding Companies

How to Find Qualified Plastic Injection Molding Companies

Selecting the best plastic injection molding company from the suppliers out there can be a difficult task. Let's take a look at how to find the best molding company for you budget by following these steps.

Instructions

1

First, in order to begin evaluating plastic injection molding companies, it is important to know what you need them to mold for you. Specifically, you will need to have a fully defined 3D Model and engineering drawing of the plastic component you wish to have molded. Be sure to fully specify draft angles and surface textures in drawing.

It is important to also specify things like maximum allowable flash.

2

Next, it is critical to realize that for most companies seeking an injection molding supplier, for right or wrong, the largest factor tends to be cost. Going oversees to places like China or Korea usually results in a lower piece cost than staying in the United States. However, this savings in cost per molded part can be offset by delays in getting the product to market.

Based on the project your company is working on, determine if there are absolute restrictions on price as this will be important to know.

3

Next, when evaluating a potential injection molding company, it is very important to learn about the history of the company and their capabilities. How long have they been in business and what industries do they typically mold parts for?

If you have a part that requires extremely tight tolerances, an injection molding company in the health or aeronautics industry may work out better than a company that molds toys.

4

After you learn about the background of the company, investigate their capabilities. What type of molding capabilities do they have? Do they have any specialties such as 2-shot molding or insert molding?

What type of presses do they use and how old are they? Are they able to handle the volumes or quantities that you require?

As alluded to earlier, lower molded component cost does not always translate to an overall savings. Depending on the quality control of the molder, their quality may be sub par resulting in delays in the schedule or worse...returned product from the customer.

Take some time to understand how the plastic injection molding company monitors and ensures quality. Do they do control charting? Are they ISO certified? Ask to see examples of quality records/documentation for some of their recent projects.

If some unacceptable product is found during an audit, what is their corrective action plan? Do they quarantine the last X hours of product?

5

Lastly, the location of the supplier can also be very important. Where are they located and how will this impact your working relationship? Having an injection molding supplier "right in your backyard" so to speak is great as it allows you to make day trips to the supplier when issues arise. Contrast this to going overseas to an Asian supplier where it will cost thousands of dollars per person per trip to visit.

China Tool Shop    http://www.freetech-mould.com

Profession Tool Shop in China

Free Technology Co.,Ltd(www.freetech-mould.com)

was established in 1993, being specialized in mould design and manufacture. At present, Free tech is located in Shajing,Bao‘an, Shenzhen, has a factory of 8,000 square feet and more than 300 employees, including 20 engineers,we use UG,Pro-E,AutoCAD,Matercam and Catia as our CAD software,and mould managment system, passed ISO9001:2000 quanlity assurance system in 2005.

The company owns a wide range of advanced equipments, for example: Fanuk high speed CNC from Japan,3200mm CNC milling center, 3500mm (CNC) EDM machine, precision wire-cutter,1200mm hole-drilling machine,1600-ton plastic injection molding machine, Japanese automatic 3D scanner,Mitutoyo coordinate measure mahine,Mitutoyo projector,etc.....

For over 20 years,Free tech has made varieties of moulds for famous companies. They included automobiles for HONDA、TOYOTA、Nissan, Ford, air conditioner for DAIKIN, electrical tools for Panasonic,washing machine for HITACHI, TV for 3 Bird,monitor for DELL,Acer,etc,80% of moulds are exported to USA, UK,France,Germany,Sweden,Spain and Japan etc.....

Our company have insisted on management theory of “Customer Centered, Based on practice, Develops on quality & reputation”. We supply our customer high quality mould with reasonable price. We are looking forward to your visiting our company and cooperating with you sincerely.

Free technology is a professional mold manufacturer specializing in mold research and development.Over the past 20 years, our business has spreaded into the following fields: --Part Research & Design --Plastic Mold Manufacture & Injection Process --double color mould machining --Precision Component Machining --Die Casting Mold Manufacture--Rubber & Silicone Part--blow mold and metal part Our products has been distributed into USA, UK, Ukraine, UAE,Canada, Russia, Italy, New Zealand, Japan,Australia and so on.....

Free-tech mold has gained good feedback from our customers,and has established a customer base. However, one of our business strategy is to develop new customers and to give our best servivce to more companies. If you have any inquiry on molds or parts, please feel free to contact us , we will make your design into the perfect actual products. You are welcome to visit our plant to get more information about us.