The hot wall vacuum brazing furnace type

The hot wall vacuum brazing furnace type

Hot-wall vacuum brazing furnace used than the parent metal of low melting point metal materials as solder, use liquid solder wetting fill material and workpiece interface gap and make it with the parent metal diffusion welding method. Suitable for welding precision, complex, and composed of different materials.
According to different welding temperature, the hot wall vacuum brazing furnace can be divided into two broad categories. Welding heating temperature below 450 ℃ is called soft soldering, higher than 450 ℃ is called the brazing. Soft soldering used in electronic and food industries more conductive, airtight and watertight devices of welding. In a tin lead alloys as solder tin welding is the most commonly used. Soft solder generally need to use solder, to remove oxide film, and can improve the wettability of solder. Flux is a lot of more phyletic, the electronic industrial use of rosin alcohol solution soft soldering. The solder residue after welding workpiece non-corrosive effect, called no corrosive soldering flux. Welding flux used in materials such as copper, iron, the zinc chloride, ammonium chloride and vaseline, etc. The need when welding aluminum with fluoride and fluorine boric acid salt as flux, and hydrochloric acid and zinc chloride as flux, etc. The solder residue after welding have corrosion effect, called the corrosive soldering flux, must be cleaned after welding.
Braze welding head high strength, can work under high temperature. There is a wide variety of brazing filler metals, aluminum, silver, copper, manganese and nickel as the base of the most widely used solder. Aluminum solder used in aluminum brazing. Silver base, copper base filler metals are often used for brazing of copper, iron parts. Manganese and nickel based solder used to weld more working under high temperature, such as stainless steel, heat-resistant steel and high temperature alloy parts. Welding of beryllium, titanium, zirconium and other refractory metals, graphite and ceramic materials are commonly used palladium base, zirconium and titanium based solder, etc. The characteristics of the parent metal and should consider when choose solder joint performance requirements. Brazing flux are usually made of alkali and heavy metal chloride and fluoride, or borax, boric acid and fluoboric acid salt, etc, can be made into powder, paste and liquid. Join in some solder lithium, boron, phosphorus, to enhance its ability to remove the oxide film and wetting. After welding flux residue rinse off with warm water, citric acid or oxalic acid.

Removal of vacuum aluminum brazing furnace oil need to pay attention to the problem

Removal of vacuum aluminum brazing furnace oil need to pay attention to the problem

1, to 400 degrees Celsius temperature quickly, in order to reduce the diffusion brazing junction silicon, is helpful to ensure the quality of joints. As this is aluminum brazing process requirements, must do it.
2, then take a slow long natural cooling, this step is to cleanse sandstones from fouling. At this time due to the furnace with nitrogen gas, waste heat by the cycle of nitrogen} L conduction, radiation to heat was less than the adsorption with the cold components of oil pollution. The temperature of these artifacts usually only tens of degrees, in the process can increase to 200 degrees Celsius, so as to achieve its evaporation table and pollution of the day.
3, the next coarse vacuum, one party but would have vaporized oil steam out of furnace chamber, prevent again by adsorption after cooling, the other party and, in the crude oil evaporation under vacuum environment will be more thorough. Diffusion pump no need to open, because when pressure drop to 10 pa, more than 99.99% in furnace gas has been pulled out.
4, closed cooling water of furnace wall, furnace door is to reduce heat loss, is more advantageous to raise the temperature of furnace wall. However, because the diffusion pump need cooling of equipment, can't stop water cycle system.
5, and other issues
Through such processing, baffle plate and oil base on some of the heat capacity of the smaller components can be cleared away. Wall due to the heat capacity, although closed cooling water in advance, but still kept cooling water increase the heat capacity of National People's Congress, the temperature is still rising gao, clean from the effect of oil pollution is the worst. So, in the final need to j ping work cleaning furnace wall. Because the oil is accumulated for a long time, the oil will stick with dust, is can't use this method to remove dust, oil pollution has been removed, the remaining dust adhesion is not strong, can use a vacuum cleaner to clean up, or use the clean compressed air to blow away. Can't clean the furnace wall and the last to do that, and heating evaporation, and there will be some oil vapor by adsorption. When removing dust will be, ash, _ stick. So the wall should be on the final wash clean.

Vacuum brazing furnace mainly Outlines and performance

Vacuum brazing furnace mainly Outlines and performance

Vacuum brazing furnace in vacuum arc of high temperature melting can make metal degassing, oxygen, and the process of removing impurities, pure metal billet is achieved. Under the action of molten metal in the water cooled copper crucible cooling solidification, as a result, high melting rate and the precise control of arc heating area, can guarantee the consistency of the direction of the molten metal solidification, and prevent solidification macro segregation and reduce the number of micro segregation, greatly improving the solidification of the ingot metal performance.
Vacuum furnace is through the material or parts under the vacuum state according to the technical process heating, cooling, to achieve the expected performance of a process. Vacuum furnace Namely in the condition of vacuum, heating up a set of components to the filler metal melting point temperature above, but below the substrate metal melting point temperature, with the aid of filler metal to wet and flow of metal in the matrix form of weld a welding process. (brazing temperature in different material varies) vacuum furnace under vacuum condition, heat the metal powder products, make the adjacent metal powder grain by adhesion and diffusion effect and a method of burn into parts. Vacuum furnace Mainly applied to metal materials and magnetic treatment.

Simple understanding of vacuum brazing furnace

Simple understanding of vacuum brazing furnace

Everyone's understanding of vacuum brazing furnace how many? In order to make people more about the product master, we'll give you a brief introduction of below!
Vacuum brazing furnace is the large-scale equipment, heat treatment can be vacuum brazing, vacuum annealing, vacuum aging and other processing. Programmable multiple different procedures, it can control and into hundreds of heat treatment curve points, six points up, down, left and right sides, front and rear area temperature control, there are more and single point temperature recorder and over temperature protection device, furnace temperature uniformity can be controlled in less than 3 ℃, the other with the installation of high purity nitrogen high flow of strong cold.
The equipment has a large amount of furnace charging and high efficiency, have special request for complex parts and parts no need for supplementary processing products.

The use of vacuum brazing furnace in good condition

The use of vacuum brazing furnace in good condition

Using gas, liquid hydrogen through outdoor of finned tube evaporator liquid tank evaporation, and concession road into large indoor air tank, in the furnace need to provide a large number of gas during the forced air cooling. Although gas supply manufacturers in the liquefied gas tanker exit gas purity of 9.998%, but according to the requirements of technical conditions should be checked at the entrance of each furnace gas dew point.
Asked dew point average for a 65 "F (18 ℃). Every six months a leak test should be made for the whole system to the root to the end, the vacuum brazing furnace running just is the result of users continuously maintained. In today's world, success is only a compromise between the gain and loss and efficiency. Users are concerned about the vacuum brazing furnace good used condition.

The vacuum brazing furnace can be adjusted according to customer's requirements

The vacuum brazing furnace can be adjusted according to customer's requirements

The following parameters for the standard configuration parameters, can be adjusted according to customer's requirements.
1, vacuum brazing furnace can match or external type fast cooling system;
2, can match the PLC programmable controller and graphic operation terminal (touch screen) control system;
3, according to the requirement of the vacuum oil diffusion pump, ultimate vacuum can reach 10-3 pa;
4, vacuum brazing furnace adopts special material selection and design of the heating element and heat insulation screen and sintering temperature can reach 2000 ℃ or more;
5, slightly negative pressure sintering system: in sintering stage a slight negative pressure value can be set, realize the constant pressure sintering furnace, improve the product density, improve the quality of sintered products.

Proper use and maintenance of vacuum brazing furnace

Proper use and maintenance of vacuum brazing furnace

Vacuum brazing furnace popularity of users and manufacturers are favorable, there is a lot to choose from a furnace, vacuum furnace products have been flooding the market. Vacuum brazing equipment is usually automatic feed, fully automated, does not require much training or through face that can master the operation. In fact, as long as strict vacuum care operator invited observe the rules, timely and pressing the button switches to operate. In addition to notify maintenance personnel to load, run, and uninstall device features the device is not normal, but the operator does not need to do any work. With different machining tools, without having to change tools, lubricants do not give on the part.
However, for new users, and these conditions are liable to be misunderstood, but also easily lead to false sense of security, when you have been forced to wait until then submit maintenance application. Specialized vacuum to less experienced users with a new maintenance problems. Vacuum brazing furnace for brazing heat treatment for more than just wear. Without regular maintenance, new stove and soon there will be a variety of problems, resulting in a vacuum furnace disabled.

Vacuum brazing furnace main use

                                            Vacuum brazing furnace main use
              
Vacuum brazing furnace, it is a kind of used for metal brazing and bright heat treatment equipment. Suitable for mass production of small and medium-sized stainless steel parts (tableware, cutting tools, hardware, etc.), such as martensite stainless steel bright quenching, tempering, austenitic stainless steel bright annealing.
   Main use: vacuum brazing furnace is mainly used for auto filter refrigeration parts, aerospace industry, can also be used for refrigerator, air conditioner, electronics, microwave magnetron industry and other stainless steel, carbon steel, brass, copper brazing and bright heat treatment of the parts.
Areas of application: vacuum brazing furnace is mainly used in steel industry, metallurgical industry, etc.