2014 Chinaplas exhibition in Shanghai
Place:Shanghai New International Expo Crntre PR China (Pudong)
Germany GC thermocouple
HOTSET heater coil is honoured as ‘ most stable,longest heating element in Germany.
Germany GC thermocouple advantages:
- easy to assemble and change
- High precision measurement
- Wide measuring range (200 ℃ ~ 1300 ℃, under special circumstances - 270 ℃ ~ 2800 ℃)
- Thermal response time is fast
- high temperature resistance can reach 2800 degrees
- Lond using time
Anole hot runner system,also is the biggest Germany GC sensor and HOTSET flexible heater agent in China.
temperature control system is normally component by controller main engine, power cable, thermocouple signal line, connection box ,the basic requirement of it is To be precise temperature control and has a protective effect on hot runner system. Here i want to introuduce the temperature conroller features
First, it has Soft start protect heating element, Hot runner mold after stop using for a period of time, might have moisture penetration in the heating element, woring in this condition, may cause short-circuit, damage the heating element. To avoid this phenomenon temperature controller will remove the heating element with low voltage on the moisture and have the leakage situation of test. Confirm heating element is dry enough in full load working voltage applied. Second, Automatic temperature switching function , plastic melting in hot runner systen has time limit. Temperature is various in different stage and time. Temperature cotroller can ensure us with that. Third, Open loop mode with manual intervention. Temperature control will move to the open loop mode in the condition of Thermocouple failure occurs or not properly temperature phenomenont o ensure the injection molding process can still continuously. Other features like : The controller algorithm ,Modular structure, Synchronous uniform heated parts,Automatic inspection system malfunction, A good user interface,Memory function,Communication function are all the Temperature conroller features.
Sprue is the most imprtant part in hot runner system mould, since the temperature control system is very complex around the sprue. around the gate area ,the temperature field is dynamic change according to the change of the injection molding process . In the injection molding stage, since the thermal flow ing and the cutting heat, gate temperature is inreasing. In the cooling phase, the temperature around the gate will reduce. That is to say the gate temperature will floating in each injection molding cycle. So temperature control in hot runner sprue is very important. In the ejection stage, the flowing should perfect solid around the gate.If gate is too hot, the folwing may folw out of mold. Otherwise, if the gate solid condition id too big or cold , the gate may can not open in the next injection cycle . For variaty cavity moulds, temperature in differents gate should be the same to ensure the mold can be opened simultaneous .cavities with same filling pressure and injection time, parts to ensure uniform size and weight here are why temperature control in hot runner sprue is very important. Our mould can promise u with the high precision temperature control. Any interested,please feel free to contact me.
Hot runner mould is widely used in producting plastic products. Since it has many features can fit the need of maunfacture. Here i want to intruduced the application of hot runner mould.
Hot runner mould have many features. First , it it small pressure lose and can be inject in low pressure and in the mean time it have the incease the quality of the products by the transmit of the pressure. Second, it can be procuct goods in a automatical condition for increase the rate of production and decrease cost. Third, basicly can can reach procudting without scrap material, can save the raw material. However, hot runner molds structure is complex and the cost of mold is higher then other stypes. So it is widely used in products with high quality requirements and lager products demand. Besides, it it applied with material of molding in the low temperature , stability in the high temperature , easy to flow in the low temperature, good thermal conductitive and high distortion temperature which can ensure to enject quickly in the mold. Material like PE,,PP, PVC,ABS ...all have such characters . These are the application of hot runner moulds.
Hot runner system is widely used in mould which is widely used in the industrial areas. Such as electronics, automotive, medical, daily necessities, toys, packaging, building, office equipment and other industrial area..
Hot runner system in industry widely applied in making various plastic , such as PP,PE,PS,ABS,PBT,PA,PSU,PC,POM,LP,PVC,PET,PEEA,PEI,ABS/PC...anything used in the cld runner mould plastic can be used in hot runner system. And also the accessoies whose weight among .0.1g-30kg can be making nicely in the hot runnner system. What is more, hot runner system are widely used in dustry Since it can help made many complete industrial moulds with very competitive price. Such as car front door handle mould . In the field of mold, auto mold is very complex. Not only the appearance of complex shape, but also the complex internal structure. So we can not just made the mould with normally structure. Since product surface can not be made by simple plane. The product can not inject in the adhesive side. There are two ways can ensure the products, the first way is three opening mould. but in this way the cost will be very high . The second way as the most used way is apply the hot runner system , hot runner can ensure the flow in the molten state when it is injection, so the mold would have no head or small head, and greatly saves raw materials. That is the reasons hot runner system in dustry is widely welcomed by customers .
Compared with the common using mould, hot runner mould has big advantage for saving time and material with high efficiency, stable quality and other significant advantages. But once because of easy generation is in use. Disabled and affect its extensive application.
These problems have good or bad direct relationship between the hot runner system
Series of success or failure, and the quality of products. So failure of hot runner system and its causes are discussed. Understand the matters should be paid attention to in the application of hot runner molding.
There is no doubt that help to the successful use of hot runner molding technology. For a hot runner mold, Use hot runner components on a regular basis in the preventive maintenance is very important. This work includes electrical test, sealing elements and the connection of wires and components such as the work of cleaning the dirt.
Written by Tina
Best thermocouple brand in world .German made great thermocouple. Below list are very popular German thermocouple brand in hot runner market.
German JUMO thermocouple ,German HOTSET thermocouple ,German SENSOTHERM thermocouple,German MIL thermocouple.
Thermocouple is a temperature sensing element, is a kind of instrument.
It directly measuring the temperature and turn signal thermocouple thermoelectric emf signal, through electric instrument (secondary instrument) is transformed into the temperature of the measured medium.
Thermocouple temperature measurement is the basic principle of two kinds of different ingredients of closed loop conductor material composition, when when there is a temperature gradient at both ends, loop will have an electric current passes through, the existed between the electromotive force on both ends - thermoelectric emf, this is the so-called seebeck effect.
Two different components of homogeneous conductor electrode as heat, the temperature is higher for work at the end of the end, one end of the low temperature as the free end, usually free end under a constant temperature.
According to the thermoelectric emf as a function of temperature, the thermocouple indexing table;
Indexing table is free end temperature at 0 ℃, under the condition of different thermocouples with different indexing table.
Basic principle of thermocouple temperature measurement: the two different material A conductor or semi-conductor A and B welding together, form A closed loop.
ature difference between 1 and 2, occurs between the electromotive force, thus forming the size of A current in the circuit, this kind of phenomenon called the thermoelectric effect.
Thermocouple is in using this effect to work.
Post by Ashley
The material to making nozzles is required to have preferable mechanical strength and good heat conductivity. For other material like inorganic mineral filler, reinforced glass fiber or material mixed with fire retardant, the material of the nozzle should have the capability of abrasion resistance and chemical resistance. The most used is heat resistant steel,include German DIN1.2343, X38CrMoV5-1, which are belong to hardening steel, equivalent to American H11, with HRC 44, heat conductivity 25W/(m.K). They are used to the case of nozzle and other components.
For valve gate nozzle , it has high requirement on heat resistance. Some use beryllium copper to make valve gate nozzle, with heat conductivity 200W/(m.K); Some other use Beryllium cooper cobalt alloy to valve gate nozzle,with heat conductivity 225W/(m.K), with heating with working temperature 280 °But need to smear some Ni on the surface to prevent the decrease of mechanical energy because of the high temperature.Valve gate normally use beryllium copper, which do not need nozzle body around the surface. Copper alloy has heat conductivity over 350W/(m.K), Aluminum alloy has heat conductivity arrange from 130 to 170 W/(m.K). Both of them are used to make the sleeve of nozzle heater and rolled bend.
The supporting pad, bearing ring and other heat insulation elements are all of stainless steel, but they are poor in bear high pressure. So, most of them are used of titanium alloy such as TiA1V4 with 7W/(m.K) heat conductivity. The best material is fired ceramic, with 2W/(m.K) heat conductivity, and good pressure resistance, with very low expansion factor.
There are many hot runner system specialized company around the world. There are more than 20 companies in Europe, which has various kinds and in high precison, leading the direction of injection mould. Canadian MOLD0MASTER,American DME and Germany HASCO and Korean YUDO are famous in Chinese market.
The main brand of Canadian hot runner system is MOLD MASTER,HUSKY and American DME,INCOE,FAST HEAT and so on. Among them, MOLD MASTER is the largest hot runner company, which also do a lot of research and has the most patents in hot runner system. It’s hot runner system is made of high precision, good structure and obey reasonable science theory. HUSKY is the world famous plastic machine manufacturer, including injection machine, auxiliary equipment and mould. It is has unique skills in high precision and multi cavities hot runner system.
2. Europe brand
Europe hot runner brand mainly have German HASCO,SYNWENTIV, Italy made
THERMOPLAY etc. And HASCO is world famous mold standard parts manufacture ,its hot
runner system and mold standard parts and mold base have great popularity in the wold
3. Asian-Pacific region hot runner brand
In Asian -Pacific region hot runner system , Korea YUDO,HOTSYSTEM ,New Zealand Mastip etc. Among them ,YUDO is the biggest one,mainly product is hot runner product.
Taiwan and Hongkong hot runner ,Anole hot runner have big market in China. Anole have mature technic in hot runner system ,supplier complete hot runner product ,Europe standard.
Post by Ashley