1, HT315 Introduction
HT315 for the full-bridge inverter DC TIG welding machine that uses phase-shifted soft-switching IGBT power switching devices driven by an advanced PWM pulse width modulation technology, inverter frequency is 50Hz to 20KHz high frequency, further step-down rectifier, the output of high-power DC power supply for welding. There are many welding machine design features, can be DC TIG, Pulsed TIG, spot welding and DC MMA welding such as welding. TIG with adjustable control when in the beginning of current income arc current, welding current, welding current with slow rise and slow fall adjustable rise and fall time. Demand on the welding arc with no income / income arc with / received repeated so choose arc; in pulse welding with 0.5 to 500HZ minutes when second gear and the corresponding frequency adjustable duty cycle pulse width adjustment; in the implementation of Spot Welding can set the required welding time; in the DC manual welding, not only have enough power, and thrust with current regulation and to ensure the personal safety of low-set output. So HT315 is a feature rich, superior performance, multi-function argon arc welding machine, able to adapt to a variety of occasions, to meet the needs of various users of welding.
Second, HT315 circuit characteristics
A. The main circuit of the core control the use of advanced PWM pulse width modulation technique - Control precision
B. Main circuit power conversion using IGBT power switching devices and high permeability of the amorphous core - Energy Efficient
C. Main circuit power driven by the technology-leading phase-shifted soft-switching technology - long-term reliable
D. The realization of multi-functional machine with a timing control module - accurate and stable
E. Machine with over-current, overheating, overvoltage, undervoltage, water and other conservation measures - to protect a comprehensive
F. Machine using arc coupler transmission and high-frequency interference absorption circuit - Reduce Interference
G. when manual welding machine set to achieve low voltage - to ensure personal safety
3, HT315 Features
1, HT315 reasonable structure
HT315's internal structure: on the weak and strong power is divided into upper and lower barrier, for regulating operation of the control knob with a reasonably isolated in the above weak layers. In the following strong layer to the input rectifier module, power supply rectifier capacitor, IGBT power module, transformer, output transformers, reactors and arc reasonable arrangements are made, are considered to have good ventilation and heat dissipation, but also to avoid as much as possible high-frequency high-voltage negative interference.
HT315 external structure: the overall design of chassis and rear, left and right, top and bottom of the order of assembly-type structure, easy assembly and local maintenance. Above the bottom of the pulley and handles the design that is able to take into account the time of a single flexible mobile, they can be stacked multi-frame multiple combinations, to a single or centralized operation is convenience.
HT315 panel layout, with a good design; common knob directly touch the exposed and readily available, compared to containing other functional knob design, its exterior with protective cover. Three-phase power switch as well as to facilitate user operations placed in the front panel, and added a switch waterproof dust cap, extend life and improve the operation of switch security.
2, HT315 feature-rich welder
HT315 not only have a relatively high-end DC TIG welding machine, pulse welding, manual welding the three major functions, also has adjustable control of spot welding and arc selection received repeated welding function.
DC TIG, the arc may choose not to use income, revenue and income arc arc are repeated and other special needs, when used repeatedly as long as the closing arc welding gun switch through direct control, can be continuously received in the welding current and arc current of constantly change between to meet the specific welding requirements.
Function using the received arc welding current slow rise of the rise time can be controlled between 0.1 to 5 seconds, and slow down the fall time can be controlled between 0.2 to 10 seconds.
In pulse welding, the welding frequency can be divided between the 0.5-500Hz low frequency two steps of selection. Pulse frequency tunable within the file, corresponding to the selected frequency, pulse width can also be within 10% to 90% duty cycle can be adjusted.
In spot welding, the welding time tunable within the set range.
When in manual welding, weld stick with a low current when the automatic thrust effect article. More excellent is the pursuit of security in many occasions, when not welding circuit voltage can be automatically zero in the vicinity of the security value, which is equipped with electric shock function.
HT315 also available for matching the welding current, the base value of current, starting current, arc current collection of four current regulation of the remote control.
3, HT315 excellent welding performance
HT315 in the small current welding, and has good features from the arc for welding thin plate when in the 5A 100% from the arc can be.
DC TIG, the arc with a collection of functional, choose the appropriate collection arc current, the end of the welding tip can be used to fill the pit. Closing arc with repeated functions, directly through the torch switch, you can easily make the welding been in continuous welding current and arc current income between repeated. Enough current to weld both workpieces, but also control the income in the state on the arc to stay. Thus avoiding the wear plate welding easy welding difficulties, to meet the special needs of sheet metal welding.
In pulse welding, can be easily and effectively control the shape of molten pool. When the peak pulse current to maintain a large degree arc of the firm. With the base value of the small current can control the pool with the shape and the input of heat. Usually, the plate and tubular all position welding, use 0.5-30Hz low-frequency pulse to make the best welding. Heat-sensitive materials with the sheet and then use 10-500Hz of frequency pulses to select welding. Pulsed arc welding is characterized by very high, focus and good use of it can be easily and effectively control the intermittent welding of the molten pool.
In spot welding, the workpiece can be easily implemented point solid welding, spot welding time of 0-5 seconds in the continuous setting. To meet the different spot to facilitate rapid.
At the double as hand soldering, the design of the full no-load voltages. So from the time arc welding easier when using alkaline electrode arc dimension is well and will not break arc; and thrust with continuously adjustable current selection. In the specific security requirements of the occasion, with low-voltage electric shock feature set.
HT315 order to meet the long-distance welding machine equipped with the length of cable to use options. Ensure that the needs of long-distance welding can get good welding performance.
Anti-interference ability, the HT315 on the torch switch online harmful interference voltage high frequency absorption increases with the second common mode rejection, then the effect of isolation through the relay switches to transmit the signal. This greatly weakened the strength of high-frequency interference, combined with high frequency arc and high frequency transformer Process reasonable arc plate installed, the high frequency arc of the machine of harmful interference is well suppressed, largely improve the machine on the high frequency noise rejection.
HT315 reliable power module work, ordinary hard-switching circuit, the main transformer primary side inductance on the turn-off, have a high reverse electromotive force, IGBT, it will also have a large thermal power. In HT315, we use the leading soft-switch technology. Solves the lack of hard switching two. Therefore, the use of the power devices with greatly enhanced the IGBT power devices such as reliability and security, while improving the efficient use of power devices.
HT315 has a good three anti-handling, in order to HT315 in the harsh working environment can be reliable and stable work, we carried out the relevant devices and materials, dust-proof, waterproof, anti-corrosion effective treatment, so that welding machine performance is greatly improved, but also extend the service life of machine.
Therefore, HT315 more excellent performance and functions perfect.
4, HT315 technical parameters
HT315 has an excellent technical parameters, it can be widely used in machinery, petroleum, chemicals, shipbuilding, vehicles, electrical construction and architectural industries. Can stainless steel, carbon steel, iron, copper, titanium and other metal materials in welding.
  HC650 technical parameters following table:
 
Indicator parameters Model
 HT315
 
Rated input voltage (V)
 Three-phase, 380V, 50/60Hz
 
Rated input current (A)
 20
 
Rated input power (KVA)
 13
 
Rated output current (A)
 315
 
Rated load voltage (V)
 TIG 22.6
 
32.6 Manual soldering
 
No-load voltage (V)
 78
 
Initial current (A)
 5-315
 
Welding current adjustment range (A)
 Welding 5-315
 
Manual welding 20-315
 
Pulse current (A)
 5-315
 
Closing arc current (A)
 5-315
 
Pulse frequency (Hz)
 LF
 0.5 - 30
 
IF
 10 - 500
 
Pulse duty cycle
 10 - 90
 
Rise time (S)
 0.1-5
 
Fall time (S)
 0.2 - 10
 
Closing arc control mode
 Arc no income / income arc with / received repeated arc
 
Off air time lag (S)
 2 - 20
 
Rated duty cycle (%)
 60
 
Housing classification
 IP21
 
Insulation Class
 F
 
Dimensions (W × L × H mm)
 320X600X625
 
Weight (Kg)
 4.3