Pressure Die Casting

Pressure Die Casting and High Pressure Die Casting

PM tooling is as  Pressure Die Casting Division is your one-stop, complete service Die Caster for various castings including die casting, investment casting, sand casting. We offer you a single source for engineered die castings

, together with cutting-edge engineering resources, advanced production capabilities and complete secondary finishing.

PM Die Casting supplies high quality aluminum, zinc, brass and magnesium die casting. We operate our casting factory in Shen Zhen, China for various castings, machining, assembly and die building, with over 20,000 square feet of total floor spac.

We are a leader in innovative quality control systems. Our quality manufacturing system includes a process failure detection system

At every casting press. Rigorous 100% inspection is as much a production operation as any other manufacturing step, and is woven into the sequential standardized work to assure manufacturing quality in finishing and machining.

As one of divisions of PM  Manufacturing Group, PM Die Casting can be more responsive to its customers and, simultaneously, offer more competitive, “made in China” pricing on quality products.

Die Casting

CROFTS & ASSINDER LIMITED

From start to finish, the Crofts & Assinder service adds a new dimension to your production capacity.

One of the most advanced design and research facilities in the business, including the latest CAD/CAM systems, gives you total control of individual product development.

Initial consultation with our technical engineers, will help you optimise your product design for the most cost-efficient precision die-casting processes and finishing. You’ll save time, cut down on wastage and be sure of the highest levels of product quality.

Zinc Alloy Pressure Die casting – finished products in seconds

Latest technological advances make zinc based alloy die-casting one of the fastest production processes available.

Raw materials are converted into finished products in a matter of seconds, ensuring high volume production runs and fast changeover times.

The process allows complex shapes to be produced to fine tolerances, eliminating wasted material and often making secondary machining operations unnecessary. And, because zinc has a relatively low melting temperature, the life of the casting die normally exceeds that of the production run.

Our high power die-casting machines offer a choice of single or multi-cavity die formats on components weighing up to 2,000 grams. got to our website to know more about die casting parts

Metal Stamping

What is Metal Stamping?

Metal stamping is the process of cutting and shaping metal alloys into specific forms, especially to be used as components for large machinery or structures. Metal sheets can be molded into different pre-determined shapes for use as regular products like pans and cans. The most common alloys that are used in metal stamping are steel, zinc, nickel, aluminum and titanium. Metal stamping is a very cost-effective and productive way of producing many kinds of metal products on a large scale.

In metal stamping, the metal sheets are placed in a die or a press tool that has a specially designed cavity that gives the preferred shape to the metal sheet. The upper part of the die connects to the press slide while the lower component connects to the press bed. A specific component known as the punch pushes the metal sheet through the die, thus performing the actual shaping operation. After pressing, the metal is plated with gold, palladium, nickel or tin to prevent corrosion.Metal stamping

Plating also increases the wearability and solderable nature of the product. Sometimes, the sheet is also pre-plated before the stamping process, and then the product is cleaned to remove excess metal stamping oils and films. The product is then heat treated to make it stronger since it is still in the soft state after stamping. The product is then subjected to the deburring process for removing the sharp corners. This is done by using chemicals or abrasives. Metal stamping also involves other metalworking processes like piercing, blanking, forming and drawing on the same machines.

Stamping presses have specific force, speed and precision for giving a specific shape to the metal. There are two types of metal stamping presses: Mechanical and hydraulic. These are available in an extensive range of capacities, sizes, stroke lengths and operating speeds.

Metal stamping is slowly replacing other metal forming processes like die casting, forging, fabricating and machining. One reason for this is the very low costs involved in metal stamping. The dies used for metal stamping cost less than those used in forging and casting. Also, the metals used in metal stamping can be harder than those used in other processes, thus making the end product stronger. The cost of the secondary processes, like cleaning and plating are also considerably reduced.

Moreover, there are certain products that have to be produced only through metal stamping: Base weights, brackets, balance clamps, brake flanges, conveyer flights, bushing seats, engine bases, flywheel shrouds and friction plates. There are also different kinds of metal stamping including: Deep drawn stamping, electronic stamping, Fourslide stamping, medical stamping, progressive die stamping and short run stamping. The most commonly used type is the progressive die drawing wherein a metal sheet is drawn through a series of dies and stamping is done by all the dies simultaneously, thus considerably reducing the time it takes.

Metal Stamping Info provides detailed information about precision, custom, and sheet metal stamping, as well as metal stamping machines and metal stamping die. Metal Stamping Info is the sister site of Wire EDM Web.

Types of Casting Molds

Types of Casting Molds

Casting is basically the manufacturing process through which a liquid material is emptied into a mold that includes a hollow opening of the desired art or shape and is then allowed to harden. This hardened casting is then removed and broken out in order to complete the process. Apart from using sand as the main mold material there is a metal that is used as the mold. Normally, a cast meehanite or an iron is used as the material for mold and the objects are made from the sand or metal. The cavity surface is basically covered with a thin layer of material that is heat resistant which can be either sodium silicate or clay.

Casting Molds: The casting molds are actually pre heated to nearly 392 degree Fahrenheit before the metal is pored in the cavity. The design of cavity for these casting molds does not chase the same principle for shrinkage like in the sand casting molds. This is because of the fact that the metal casting molds heat up and enlarge during the pouring process and so the cavity does not need to be expanded like in the sand castings. Nevertheless, care should be taken in order to ensure a correct thermal balance as you can use external water source for cooling or you can also opt for suitable radiation techniques.

Permanent Casting Molds: Although these permanent casting molds are not as flexible as the sand castings which allow to be used in different metal patterns or designs but these lower the cost of producing the part. When there is a production run of more than 1000 parts the permanent casting molds would produce much lower piece of cost part. Apart from this, the break even point also depends on the density of the part. There are more complex parts that are favored when you use these permanent casting molds. The typical part size would be around 50g to 70 kg and the basic materials used are medium and small parts that are made from magnesium die casting, aluminum casting and brass and also their alloys.

Slush Casting Molds: The slush casting molds are actually a special type of permanent casting molds in which the molted metal is not allowed to solidify completely. After gaining the desired wall thickness the still not solidified molted metal is then poured out. This is basically used in order to make void ornamental objects like lamps, candlesticks and statues.

Corthias Casting Molds: This type casting molds is yet another variant of the permanent casting molds in which basically a plunger is used to pack the molted metal through the spure hole. This type of process allows thinner walls and to produce greater details.

Vacuum Permanent Casting Molds: This is also another type of permanent casting molds which is also similar to low pressure permanent casting molds. In this type vacuum is used rather than a pressure. You can make thin wall casting through this type of casting molds like in the other low pressure casting molds. Apart from this the results are high as there are no risers used.

Casting Molds

What is Casting Molds

Casting molds are an essential part of the metal casting process as it will be used to shape the final result. Nearly all metal casting methods will use some type of mold. The standard mold will consist of a cope and drag that when together is called a flask. The mold itself can be constructed of several materials depending upon the casting method.

Most molds will be made from latex, fiberglass, sand, and even metal. Sand molds are the most popular since Sand Casting is commonly used in small home foundries. In Permanent Mold Casting, the mold is created from metal. Most molds can be used over and over again, but not all of them. Certainly the metal molds can be used multiple times without loosing any quality from the finished product. However, molds created using sand or other materials will not have a very long shelf life. This is not generally seen as a huge problem just a minor annoyance since mold making is relatively cheap and easy.

No matter what material the mold is made from, the basic construction is pretty much the same. The molding box is called the flask which has a cope, the top, and drag, the bottom.  You will then fill the flask with the molding material and then place the original into the mold. So, if you want to cast a tiny metal elephant, you will place an original of the elephant usually made from clay, wax, wood, or even metal into the drag of the flask. If this is done in sand you will ram the flask until the sand is packed tightly around the original. The top of the flask, the cope is then placed on and more molding material poured in. The entire flask is then rammed or vibrated making sure everything is packed in nice and tight.

When the molding material is dry, you will remove the flask and carefully split the mold to retrieve the original, in this case the tiny elephant. Now, if you want to make sure that there are some empty spaces in the cast to be finished then you will place cores into the mold. The cores are made of sand or wax.

The type of mold used depends heavily on the type of aluminum casting, alloy casting, and complexity of the pattern to be cast. Metal molds have little use in small foundries unless you plan on casting a lot of tiny metal elephants.

In some cases, pre-made molds can be found in hobby shops or through company casting companies. Usually, pre-made molds are used in miniature castings. Many individual metal casters prefer to make their own molds since it is inexpensive and allows them greater control over the finished casting.

Metal casting involves several sets of skills and mold making is one of these skills. Mold making is an invaluable skill for metal casters as it is so very important to the casting process. Not only are molds used in metal casting but in other casting types as well. Resin casting, aluminium die casting, magnesium die casting and other plastic molding requires a mold as well. The flask can be made of wood, metal, and in some cases those toy building blocks, we all know the type. As long as the flask can hold the mold material until it dries it can be used.

Every metal caster should learn how to make a mold instead of relying on others. It’s not only about independence but about saving money as well. Making your own plastic molds is just cheaper.