How Difficult In Stamping Dies

Customers like to ask the production time for stamping dies. The most direct factor that effect on the production time is how difficult in processing. The more parting surface, the more difficult in making up. If there is lack of experience and with simple process, the scrap rate will be very high.

In general, the stamping dies are composed of two parts. They are  movable mold and the fixed mold. The design of parting surface has a direct effect on product quality and die structure. 

The parting surface is the part that could contact on the closing state. In order to take out conveniently while casting, we is habit of making the casting into several parts. Its combined is called parting surface. You should ensure the casting quality when choosing as soon as possible. When you determine the parting surface, you must obey some rules. At first, the die structure had better simple and it is favor of demoulding successfully to the stamping one. Certainly you can not do anything which may effect the appearance quality of the product. The size precision of the product must be good.

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Drawing Dies In Our Life

In general, drawing dies are refers to various mold of drawing metal wire and fiber drawing die. All of drawing dies center have their own a special shape. Such as hole, round, square, star anise and other special shapes.

When the metal pulled through the hole, its size become small and even its shape has been changed. Steel wire is usually adopt tungsten carbide nib. The typical structure of this mold is a carbide mold core with cylindrical, there is bell, entrance cone, deformation cone in the inner hole of a mold core.

Drawing dies are widely used in many fields. Such as radar, television, instrument, aerospace and electronic devices. Production process of wire drawing die insert sleeve includes pressing die, draft, cutting and other process steps.

Drawing die is made of metal wire. With a kind of mold, the metal wire changed from coarse to fine, until it reach the required size. Mold core of drawing die is often made by natural diamond and synthetic diamond. Copper wire drawing die is belongs to the cord drawing die. Drawing dies also includes carbide drawing die,  plastic drawing die and diamond drawing die.

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Choose Steel For Cold Heading Dies

A lot of fasteners are formed by cold heading dies. The cold heading dies have been born violent punching loads. The concave die surface is under high stress. So the high stress could offset the stress which produced during the cold heading process.

Generally speaking, cold heading dies which used for small quantities of workpiece usually choose carbon tool steel or low alloy cold die steel. The mold cavity surface must be done local quenching. And making the hardness of cavity surface reach to HRC60. But the die central should reach to the range from HRC35 to HRC45. Certainly people would choose die steel by its section size. Besides it owns hardenability. Too shallow hardened layer is easy to result in cavity collapse. On the contrary, too deep hardened layer may make the die cracking.

Some cold heading dies need long service time. These one are often adopt high alloy die steel or high speed steel. In order to make the die could bear high impact load, we can use combined die structure. Cold heading dies with high hardness are made of die material which is in high alloy. Making cold or hot pressing method inserts into the outer sleeve. Then they will be contacting closely.

Application Of Tungsten Carbide Rods

Tungsten carbide rod is surfacing electrode which is regarded carbon steel as the core. It is usually own sodium type coating with low hydrogen. Tungsten carbide rod is transition by the tungsten carbide alloy in drug skin. Due to the thick skin, the sleeve will also be long. After the rod become red, the drug skin is easy to fall off with small parts. So it had better use direct current. The electrode section is positive and it use small current.

Tungsten carbide rod is apply to the repair of abrasion parts and mechanical parts which under strong wear. Such as concrete mixing blade, bulldozers and pump blade, dredging machine blade, high speed mixing sandbox, impeller blower, the mixer blade, mud pump and coal chute, cement plant tray, spire, fence tooth, lining board, jaw plate, rock breaking machine, hammer and electric bucket tooth.

Tungsten carbide rode don’t need any preheating before welding. Certainly it needs to heat after welding. Tungsten carbide rod has a series of advantages, such as in high hardness, good wear resistance and erosion resistance. With its good wear resistance, the device service life could be extended about four to eight times.

How To Recycle Tungsten Carbide Powder

In the times of communication developed, our information is developed rapidly. So we should make good use of the conditions of the times. Leave a message or set up their own information platform in the information platform. Many people who want to sell their tungsten carbide power always distress where to sell and how to sell them in a good price. They had better expand their information and create credibility to get more and more visit. This is not only save times and energy, but also improve the efficiency of tungsten carbide powder recovery. This recycle method is called waiting for customers.

In simple words, tungsten carbide powder recycling is nothing more than recycling enterprises of the unwanted tungsten carbide powder material. Sometimes we go to some enterprises, there are some waste tungsten carbide power left. At this time, in order to treat these waste material with an easy method, they will like to give us a low price to recycle them. So going to related enterprises is a practical method for recycling tungsten carbide powder.

Nowadays more and more people like to solicit business by calls. In fact, some people who does the business of recycling tungsten carbide power use calls to get business. But it is often difficult to get an effectively  call. In spite of this, people still not give up using this method to get their business.

Waste Tungsten Carbide Roll Ring Process

The processing principle of waste tungsten carbide roll ring is that making the inside filling up through a core shaft. And finally reach the clamping effect. Generally speaking, it can make thin wall sleeve expansion of 0.15mm.

Wast tungsten carbide roll ring should choose cutting fluid reasonably, that can promote friction in grinding process, decrease grinding heat. the most important function of cutting fluid is cooling, lubrication, cleaning, rust. The selection of grinding fluid has a big influence on grinding hard alloy scrap tungsten carbide roll ring. Good grinding fluid can promote work efficient and decrease roughness value of work piece surface.

The wheel sand of wast tungsten carbide roll ring is made of abrasive and binder. It is processed through several steps, such as limit, boring and sintering. It is also composed by abrasives, binders and space. Abrasive is equivalent to the cutting blade which owns cutting action. Space is favor of removing chip and heat dissipation. In general, people like to choose diamond grinding wheel which regard resin and bronze as binder. This will play a good role in batch processing of waste tungsten carbide roll ring.

Reduction Size Of Tungsten Carbide Powder Oxides

There are many factors that influence reduction size of tungsten carbide powder oxides. Such as tungsten carbide powder properties, impurities, and temperature. Restoration activity of tungsten oxide has obvious effect on the particle size of tungsten powder. Material with bigger restoration activity is more easier to get the tungsten powder with fine grained.

The influence of impurity elements in tungsten particles change, can be divided into three categories. The fist category is that impurity elements which represent by alkali metal can play the carrier effect of oxygen. It can promote chemical reaction and enhanced tungsten powder particles grow. The second one is that calcium, magnesium and silicon have little influence on tungsten particles growing. Besides materials which represent by aluminum can form a thin oxide layer with high stability. Elevated temperature can accelerate the reduction reactions. And it also speed up the creation of water vapor, particle growth and aggregation.

Partial pressure of water vapor is a main factor to powder particle size and shape change. Water vapor is a basic condition to chemical vapor removal reaction, it includes water vapor in hydrogen and reduction reactions. It is not a stable value in the process of recovery.