The temperature measurement and operation technique of 2.0MM-5.0MM Submerged ARC Welding Wire was used
The test object is the components of a certain type of machine commonly used in industrial production, consisting of wires, outer boxes, connecting rods, fasteners and other parts. The wire and the outer box are set up by means of the dust - free argon arc welding. The characteristics of the structure determine the following special requirements for welding process:
1) the maximum temperature of the zero match is small
Used by (1) is 2.0MM-5.0MM Submerged ARC Welding Wire used at many points along the fasteners, according to the design requirements during the welding process 15 MM away from defective parts, welding process of the highest temperature should not exceed 95 ℃. If the temperature is too high, it will burn the fastener and disable the fastener.
There is no dust in the box
Once generate dust fall off or flash on the back of weld, into using 2.0MM-5.0MM Submerged ARC Welding Wire inside the box, will lead to a rod body surface strain in the process of connecting rod movement or fasteners is damaged, cannot have binding effect, lead to scrap the whole machine.
3) the welding slag should be small
Use 2.0MM-5.0MM Submerged ARC Welding Wire machine wall thickness is only 1 MM, slag, welding process using 2.0MM-5.0MM Submerged ARC Welding Wire rod can't normal movement, so the design requirements for the ovality can't more than 1.15 MM.
Above all, on the one hand, the zero of welding slag have strict requirements, products in addition due to the combination of welding inside the box near the weld assembly fasteners, therefore, the welding process with zero temperature is strictly limited, this creates special difficulties for welding process. Dust and slag can joint form through reasonable selection, welding process parameters, operation and the highest temperature of zero with goods lack of strict operation technology and experience, therefore, the welding process temperature of zero with goods strictly operation become the zero with the key to the success of computer, it is important to experiment and explore.
1. Optimization of the method of temperature measurement in clean room
1.1 2.0MM-5.0MM Submerged ARC Welding Wire measurement
The usual method of measuring temperature is classified and characterized by the table (2). It can be seen from the above table that, because of the need to measure temperature in the dust-free state, it has its limitations through expansion method, pressure method, resistance method and thermal radiation method. Spraying collodion with K type temperature measuring, has a good linearity, fast response, high precision, wide temperature measurement, recording and appropriate, as well as the low cost of operation, especially the implementation is simple, the maneuverability is strong, therefore, we choose K type thermocouple heat in argon arc welding process for measuring temperature of incomplete.
(2) 2.0MM-5.0MM Submerged ARC Welding Wire commonly used for measuring temperature method classification and characteristics
The implementation of the method of temperature measurement of 1.2
2.0MM-5.0MM Submerged ARC Welding Wire is required to measure the temperature of the non-dust indoor residue. Therefore, it is necessary to solve the problem of connection between the spray and the defective products. In actual processing, we adopt capacitive energy storage soldering to the specified temperature measurement site, and adopt capacitor energy storage and energy to weld metal foil with a narrow strip of fixed spray cotton.
The compensation wire is connected to the connecting fork of the dustfree argon arc welding machine. In clean outdoor connection open fork through corresponding compensation on wires connected to DR020R type digital temperature detector circuit, using the recorder which can realize the welding process of incomplete temperature automatic measurement, display, monitor and record. It can also read and print the temperature value of the welding process.
In the actual welding need to be aware of when is clean indoor connection spraying collodion compensation conductor should be round out twice, and leave the appropriate allowance until clean again after argon arc welding machine reserved connection open fork, prevent the welding process because of incomplete rotation, will break, spray adhesive cotton affect temperature and welding work.
2. 2. 2. 2. 0mm - 5.0 MM
In practice, the 2.0MM-5.0MM Submerged ARC Welding Wire is used to achieve the maximum temperature of the defective products by adopting cooling tooling and optimizing welding parameters. USES a pair of thick about 45 ㎜ semi-cylindrical cool gold piece, and use the 2.0MM-5.0MM Submerged ARC Welding Wire, auxiliary cooling effect.