1. What are the main characteristics of electronic gasoline cutting and welding machine?
Safe, energy-saving, lightweight.
a. Security is the most prominent feature of this product. According to incomplete user surveys, the outstanding safety performance of this product has been generally welcomed by users. It has solved the worries of the boss and solved the problems for the employees.
b. Energy saving is the most competitive feature of this product, and it is also a magic weapon for this product to overcome other flame cutting gas (such as acetylene, gold flame, etc.).
c. Lightweight makes this product portable, making this product the best equipment for mobile cutting welding.
2. Why is the electronic gasoline cutting welder the safest of all flame cutting machines?
a, no tempering: Gasoline mist and other gas gas chemistry is different, no tempering accident.
b. No explosion: The fuel tank is filled with explosion-proof materials recommended by the Ministry of Public Security, and it will not explode even if the fuel tank is directly ignited.
c. No leakage: Gasoline fog has no pressure. It is sucked by the negative pressure generated by the oxygen suction force. As long as the oxygen shuts off the gasoline fog, it will not leak.
d, no pressure: the fuel tank, spray box, gasoline fog storage box are no pressure.
e. No accident: There is only a small amount of gasoline mist in the gasoline pipe during work, and there is no pressure. Even if the pipe is damaged, no accidental danger will occur.
f. No hidden situation: Any abnormal conditions during work, even if only a trace amount of gasoline escapes, can be immediately recognized by smell.
3. Why is the electronic gasoline cutting and welding machine an energy-saving and economical product?
a. Low gas cost: Compared with other fuel gas (such as acetylene and gold flame), gasoline has the lowest unit cost and can save up to 76% of the cost.
b. The cost-effectiveness of the equipment: The average user can recover the equipment cost in 2-6 months, and the user invests in the province with a large profit.
c. The maintenance cost is low: the parts are more versatile, easy to purchase, and inexpensive.
4. Why is the electronic gasoline cutting welder a lightweight and portable product?
a. Light weight: Both products are filled with oil weights of 21 kg and 16 kg, respectively.
b. Small size: The product has a compact shape.
c, AC and DC: equipped with two kinds of power to facilitate use in different places.
5. What are the main differences between atomized gasoline cutting characteristics and acetylene cutting characteristics?
The acetylene combustion speed is too fast and should not be controlled. Before the ignition and extinguishing, the blasting sound is often emitted due to the change of the oxygen supply conditions. The flame heat distribution is the higher flame center in available gas (gasoline, acetylene, gold flame, etc.) Radiant heat and maximum combustion speed, but its total heat is lower than all gas. Therefore, the cutting characteristics of acetylene flame are:
a. The heat distribution is uneven, concentrated in the flame heart, and the temperature difference between the flame heart and the flame is large.
b. The workpiece warm-up time is short when the sheet is cut, usually 2-3 seconds.
c. It is not economical to use acetylene for heavy plates and large components because acetylene gas is expensive and the required total calorie gas consumption is large. To maintain the cutting speed, thick plates and large components require a high thermal output of the outer flame, and a low outer flame thermal content reduces the cutting speed.
d. It is easy to cut edges and hang slag, and the slag is not easy to remove.
Atomized gasoline has a moderate burning rate and is easy to control. It calms as usual before ignition and extinguishing. Its flame heat is evenly distributed, and the flame core and outside flame have a small temperature difference. The flame core temperature is as high as 2870°C, much higher than the steel cutting start temperature (1500°C). ). Atomized gasoline flame cutting features are:
a. The heat distribution is uniform and the flame temperature is high.
b. The warm-up time is moderate, usually about 3 seconds.
c. The flame is stable and the cutting speed is faster, because more than 85% of the total heat in the cutting process is maintained by the chemical reaction heat generated by the metal combustion. The heat provided by the gas flame is mainly used for cutting and starting; in addition, the atomization of gasoline outside Flames release a lot of heat, which is conducive to the cutting of thick plates.
d. The edge of the cut edge is not easy to cause collapse. The incision is smooth and smooth. There is less dross along the cut edge and it is easy to remove. The reason is that the atomized gasoline flame has a uniform heat distribution and the temperature is suitable, and the possibility of the metal rapidly melting due to the flame is small.
e. Gasoline is the most widely used, with the most supply channels and the lowest price. It is less than 1/4-1/2 of other cutting gas (acetylene, gold flame, etc.).
f. Atomized gasoline burns well in oxygen and is non-polluting to the environment. It is the best substitute for other cutting gas (acetylene, gold flame, etc.).
6, why some gasoline cutting welder manufacturers claim that "3L gasoline can replace a bottle of acetylene," and your company's promotional materials that your atomization effect is better, more fuel-efficient, but it is "4L gasoline can replace a bottle of acetylene"?
The heating value of gasoline is 48 MJ/kg, and the heating value of acetylene is 45 MJ/kg. There is a certain (not absolute) proportional relationship between the cutting workload and the calorific value of gas. In this case, the same workload basically corresponds to the same weight of gasoline or acetylene.
The so-called gasoline atomization is a very basic but particularly important technical term in this technical field. It means that liquid gasoline is processed through a special physical process to reach a state of “gasless non-gas†and its gasoline particle diameter is below 1 micron. In the equipment we provided, the gasoline was ultrasonically atomized and the secondary atomization at the cutting nozzle was fully burned. Image is a bit equivalent to planing the firewood into shavings and burning it. The effect is much higher than the effect of mechanical atomization only on the cutting nozzle, because the mechanical atomization is essentially the larger liquid particles (diameter above 15 microns), and there is a big gap between the actual atomization.
A bottle of acetylene on the market is generally only 4kg. We have conducted comparative tests. There are actual comparisons. Therefore, we have stated in the promotional materials that “4L of gasoline can replace a bottle of acetyleneâ€.
7. The use of electronic gasoline cutting and welding machines does indeed save costs, and I wonder if there will be a large increase in oxygen consumption.
Does not increase oxygen consumption. Burning the same quality of gasoline and acetylene consumption of oxygen is basically the same, but the oxygen required to maintain the flame burning is usually only a fraction of the total oxygen consumption in the cutting (15 to 10%), for example, for 10mm thickness steel cutting, The oxygen consumption is basically the same.
For thick plates, the outside flame temperature of gasoline is higher than that of acetylene, and the cutting speed is faster than that of acetylene. The same workload will consume less oxygen than acetylene.
8. Why is acetylene and hydrogen easily tempered and gasoline will not be tempered?
The so-called tempering refers to that after a certain kind of gas is ignited, its flame is rapidly “chasing†the combustion along the gas supply pipeline against the countercurrent, causing the flame to gradually approach the dangerous state of the gas source.
In general, only acetylene and hydrogen are the most active in industrial gas, and they are easily tempered. The activity of other industrial gases is far below them and they are not easy to temper. Nebulized gasoline hardly flashes.
In addition to tempering caused by improper operator operations, tempering is mainly determined by the physicochemical properties and combustion characteristics of the gas. The reason for tempering is generally due to the fact that the speed of gas combustion is greater than the speed at which gas is ejected from the cutting torch, so that the gas flame instantly propagates to the torch and the gas pipeline. Due to the very high burning speed, the phenomenon of gun bursting and bursting may occur. It will endanger the acetylene gas tank.
The two carbon atoms in the acetylene structure contain two very easily cleavable π bonds (CH ≡ CH), which have strong chemical activity, low ignition point, fast burning speed, and easy tempering. The main component of gasoline is n-octane C8H18, and the molecular structure (CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3) contains only relatively stable sigma bonds, and almost all other components do not contain π bonds. Therefore, its chemical activity is far lower than that of acetylene, and its burning rate is much lower than that of acetylene, so its tempering tendency is also small. In addition, gasoline is very close to the gas mist, but it is not a gas. The contact area with oxygen is smaller than that of acetylene, which also limits its tempering speed.
The burning rate of hydrogen in oxygen is: 11.2m/s; the burning rate of acetylene in oxygen is: 6.9m/s; the burning speed of atomized gasoline in oxygen is only: 1.3m/s; it is due to the burning speed. Differently, hydrogen and acetylene are easily tempered, and gasoline is hardly tempered. It is safe.
9. What is the difference between the operation of gasoline cutting and acetylene cutting during warm-up?
The basic operation is much the same.
Acetylene flame up to 3150 °C. The cutting characteristics of the acetylene flame are: concentrated heat distribution, high flame core temperature, short workpiece warm-up time, usually 2-3 seconds.
The atomized gasoline flame temperature is 2870°C. Atomized gasoline flame cutting characteristics are: uniform heat distribution, flame flame center temperature is moderate; because the flame flame temperature of gasoline flame is slightly lower than acetylene, if the acetylene flame cutting the same operation preheating time is about 1-2 seconds longer than acetylene.
In fact, the preheating time of atomized gasoline can be reduced. Tests have proved that: using an oxidizing flame (which can increase the flame temperature of the atomized gasoline under the oxidizing flame conditions) and properly adjusting the distance between the cutting torch and the cutting surface, the preheating time can be greatly shortened, and the oxygen supply amount can be appropriately reduced after the normal cutting is performed. . In addition, the preheating time can be reduced by appropriately changing the angle of the preheating flame and concentrating the preheating of the smaller volume metal to quickly reach the ignition point.
As long as the operator fully understands the combustion characteristics of atomized gasoline and changes the cutting habits in time, there will be satisfactory results.
10. Does the edge of the sheet after cutting gasoline is almost right angle, why not collapse?
The flame temperature of the acetylene flame is 3150°C, and the heat distribution is concentrated in the inner flame (about 35% of the total heat), so it is easy to cause cut edges.
The heat distribution characteristics of the atomized gasoline flame is different from that of acetylene. Its flame temperature reaches 2870°C (the melting point of iron is 1538°C, the heat distribution is uniform, the flame core is not prominent (about 20% of the total heat), and the flame causes metal to melt rapidly The possibility is small, so the cutting edge is not easy to cause collapse, the incision is smooth and smooth, and there is less slag along the cutting edge and it is easy to remove.
11. Is there actual data comparing the speed of gasoline cutting and acetylene cutting?
fuel
Plate thickness (mm)
Cutting speed (mm/min)
gasoline
40
397
Acetylene gas
40
356
Company Name: Foshan Shunde Haoli Electromechanical Co., Ltd.
Contact: Yu Gong, Zhao Gong
Address:Daliang Town, Shunde District, Foshan City, Guangdong Province
Zip code: 528300
phone
Mobile Phone: 13432653865
Website:
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