Molybdenum Alloy Plugs to Pierce Stainless Steel Pipes

There are two kinds of steel pipes – stainless steel pipes and welded steel pipes, according to their production methods. Compared with welded steel pipes and other steels, stainless steel pipes are pierced with tools such as plugs and mandrels.

These piercing tools not only participate deformation, but also are the most important factors that determine whether the main processers of steel pipe production, such as piercing and pipe rolling can operate normally. As a matter of fact, the production process of seamless steel pipe also reflects the technical level of these tools. In other words, the research on internal deformation tools is an important subject of seamless steel pipe technology research.

Molybdenum alloy plugs are used to pierce seamless tubes of different materials, such as stainless steel, brazing steel, high-temperature alloy steel and other special parts. As they work in high temperature and harsh environments, the material of plug requires the characteristics of high temperature strength, high temperature oxidation resistance, long service life, corrosion resistance and not easy to stain glass.

Therefore, the material of the plug usually adopts molybdenum alloy with a composition of Ti, Zr, C and Mo. Molybdenum alloy plug is produced in a powder metallurgy process, has a higher recrystallisation temperature and higher strength compared to pure molybdenum, and is readily deformable even at room temperature. These effects are due to mixed crystal formation between Mo and Ti as well as the precipitation of ZrC as a dispersoid.

Actually, the materials to be used depends on what kinds of steel pipes to be pierced. Different materials of pipes have different characteristics and thus require plugs to meet different working conditions. As a professional manufacturer of molybdenum and tungsten, Chinatungsten Online can offer you various kinds of piercing plug. Certainly, customized designs are welcomed. Send us drawings and inform us its detailed application, we will offer you the best solution. 

If you have any inquiry of TZM plugs, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

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Amazing! 500 Bottle Caps Produced in One Minute with Hot Runner System

 500 plastic cups or 500 bottle caps are produced in one minute. Oh my god, it’s so amazing! Indeed, it is probably a fantasy to achieve such high efficiency with traditional production lines. But hot runner system has achieved and is constantly improved at present. 

Almost every industry, including construction, electronics, aviation, automotive, medical, food and beverage, more realizes the potential for gaining a competitive advantage. Injection molding is not only an efficient method of manufacturing precise plastic parts and components, but also reduces production time, has high precision and reduces material waste. It can produce plastic parts that are as strong as steel, or can be very soft and flexible.

When using the plastic injection molding process, the manufacture of any part starts with the mold. The molding system is divided into two categories: hot runner molds and cold runner molds. The hot runner uses a screw nozzle, which is fed by a pump through the barrel, while the cold runner uses a closed thermosetting mold. The main task of any runner system is to guide the plastic melt from the runner to the mold cavity. 

The system requires additional pressure to push the material through the flow channel. The frictional heat generated by the material in the runner mold flows through the runner and increases the temperature, thereby facilitating the flow. One of the best rewards of any project is to reasonably determine the size of the runner for a given component and mold design.

The nozzle is the key component of the hot runner mold. In the hot runner system, in order to maintain the molten state of the plastic in the nozzle, heat insulation must be as perfect as possible, and some nozzles need to be heated internally or externally, while the cavity needs to be cooled. The temperature difference between the two is usually 100~200℃. Therefore, the material and design of nuzzle should meet the thermal balance requirements in priority, which are necessary to avoid too much cold material in the nozzle to solidify and block, but also to avoid overheating of the plastic, casting or drawing, or even decomposition.

The best material for machining nuzzles is titanium-zirconium-molybdenum alloy (TZM alloy). TZM nuzzle can maximize the utilization of materials and meet the requirements of plastic melt insulation and heating. In addition, molybdenum alloy nuzzle also has a very long service life, which can greatly reduce production costs. 

Chinatungsten Online is a very professional manufacturer of tungsten and molybdenum, with rich experience in the production of titanium-zirconium-molybdenum alloy rods. If you have any purchasing plan, please feel free to contact us.

If you have any inquiry of TZM rod, please feel free to contact us:

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Molybdenum Disulfide Is One of the Ideal Materials for Transistors and Chips

Molybdenum disulfide (MoS2) is considered to be the most promising alternative to silicon due to its unique single-layer atomic structure and excellent photoelectric properties, and becomes one of the ideal materials for future applications in high-precision technology fields such as semiconductors, transistors, and chips. Therefore, in recent years, scientists have maintained a strong interest in the exploration and research of molybdenum disulfide.

Recently, the EPFL research team used molybdenum disulfide to develop a new type of "brain-like neuron transmission" computer chip, which has the ability to process and store information in the same circuit, and realize small size for computer equipment. It provides new ideas for optimization, high efficiency and energy saving.

Molybdenum disulfide is a transition metal chalcogenide two-dimensional material (TMDC). It has a graphene-like layered structure and has the characteristics of a direct band gap semiconductor that graphene does not have. Molybdenum disulfide is composed of three atomic plane layers (S-Mo-S) stacked. It has a large specific surface area, high electron migration rate, anti-magnetic resistance to radiation, low energy consumption, environmental protection, energy saving and efficiency, and high stability. And can achieve large-scale production, is an ideal material for optical and electronic equipment.

For the first time, EPFL researchers have successfully applied the two-dimensional material molybdenum disulfide to a chip that integrates data storage and logic operations. This will subvert the traditional computer model of processing data by the central processing unit (CPU) and then transmitting it to the hard disk for storage. 

According to reports, the new chips are based on floating gate field effect transistors (FGFETs) and are usually used in flash memory systems for cameras, mobile phones or computer equipment. These transistors can hold charge for a long time, and molybdenum disulfide with a thickness of only three atomic layers can not only further reduce the volume of electronic devices, but also has a strong sensitivity to the charge stored in the transistor, so logic operations can be implemented as well as data storage function.

Chinatungsten Online's molybdenum disulfide not only has great application potential in optical and electronic fields such as semiconductors and nano-transistors, but also can be used as lubricants, antioxidants, catalysts, etc., and is widely used in aviation, automobiles, mining, shipbuilding, bearings and other industrial fields. 

If you have any inquiry of molybdenum disulfide, please feel free to contact us:

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Nuzzle Tip, Machined from TZM Rod, Is Essential for Hot Runner System

HRSflow is completing the expansion of its 3,000-square-meter factory in San Polo di Piave, Italy. The expansion was designed according to lean production standards to make the hot runner assembly process more efficient. The goal is to ensure increased production capacity and provide customers with greater flexibility.

Since its introduction into the industry, hot runners have played a key role in improving the injection molding process. Although the capital cost is greater than that of cold runners, its ultra-high production efficiency makes it a long-term and economical choice. The improvement of system performance can produce parts with excellent appearance and increase part functions. In addition, the hot runner improves energy efficiency and saves plastic raw materials, thereby shortening cycle time and reducing part costs.

Companies in the world are implementing hot runners and seeking various solutions for further optimization considering its advantages. Of course, the focus of this article is not on this, but on one of the important parts- hot runner nuzzle tip. 

A hot runner system is an assembly of heated components used in plastic injection molds that inject molten plastic into the cavities of the mold. The used nozzle material is important as it affects production efficiency of the whole system, production cost and quality of finished plastic products. 

Pure molybdenum has a very high melting point, good strength, low thermal expansion coefficient and excellent thermal conductivity, and is a good comprehensive candidate material for most high-temperature applications. TZM is an acronym for "Titanium-Zirconium-Molybdenum", which is a molybdenum alloy. Its production method is powder metallurgy.

Although TZM is 25% more expensive than pure molybdenum, in some applications, the additional cost is offset by its increased strength at high temperatures. The recrystallization temperature of TZM is higher than that of pure molybdenum, which reduces the possibility of embrittlement at high temperatures. In high temperature applications, TZM has higher strength, hardness, creep resistance and ductility, which can ensure that it will not weaken or become soft.

Therefore, titanium-zirconium-molybdenum alloy is the most suitable material for nozzles at present. Chinatungsten Online is known for its high-quality products, outstanding service and attention to detail. The provided TZM rod has strict tolerance control and high processing yield. 

If you have any inquiry of molybdenum electrode, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

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