At present, in the field of steel pipe cutting machine application, in order to meet the needs of different intersecting welding and cutting processes, the linear processing mode for the torch swing axis has been improved by the traditional two-dimensional oriented multi-dimensional way, with the most complicated steel pipe eccentric oblique intersecting For example, the swinging of the cutting torch needs to involve the linear operation processing system of the five main shafts of the steel pipe and the two main axes of the steel pipe. Our company processes many varieties and specifications of high-quality bristles all year round, and can provide customers with various standard washed bristles, boiled bristles, bleached bristles, dyed bristles and other products. The products are highly praised by customers! Warmly welcome overseas merchants to call and write for negotiation. Bristles Mixed Filament,Mixed Filament,Best Bristles Mixed Filament,Bristles Mixed Filament For Sale JIANGSU RARHON TOOLS CO.,LTD , https://www.rarhontools.com
At present, in the field of steel pipe cutting machine application, in order to meet the needs of different intersecting welding and cutting processes, the linear processing mode for the torch swing axis has been improved by the traditional two-dimensional oriented multi-dimensional way, with the most complicated steel pipe eccentric oblique intersecting For example, the swinging of the cutting torch needs to involve two main axes of the radial surface of the steel pipe and the cross section of the steel pipe; at the same time, a total of five linear parameters of the self-rotating surface of the steel pipe, the axial translation of the steel pipe and the torch height are used. Wuhan Jiabei Technology is engaged in the research, development, production and sales of domestic steel pipe cutting machine equipment for many years. The Xunfeng G series steel pipe cutting machine developed by the company has complete independent intellectual property rights and can realize six-axis linkage cutting processing. In order to facilitate the users to understand the functional characteristics of different types of steel pipe cutting machines, we will mainly use the five-axis steel pipe cutting machine as an example to briefly explain the characteristics of the linear arithmetic processing system of its control system.
The formula for calculating the penetration depth of a five-axis steel pipe cutting machine under the steady flow conditions of an ideal incompressible fluid is: L=ut=1Vj/u-1 (in the formula, the penetration velocity of u, m/s). When the jet velocity is low, the strength of the wall target plate is significantly affected, and the strength of the target plate cannot be ignored. To this end, the critical penetration velocity Vk of the jet is proposed to indicate the influence of the strength of the target on the penetration. According to the experiment, the following relationship can be obtained:
Vju=1 Qt/Qj (Vj≥2.6Vk);
Vju=k1 Qt/Qj1-(Vk/Vj)2(Vk≤Vj For the relevant parameters involved in the operation of the linear five-axis steel pipe cutting machine, especially the cutting speed and the cutting angle, it is necessary to pay attention to Vj usually Less than 2.6Vk value.
Therefore, the formula for calculating the penetration depth is: Li=lik(1 Qt/Qj)1-(Vk/Vj)-1 (in the formula, Li-jet micro-element penetration depth, mm;li-the effective length of the jet micro-element before penetration , mm; Qj, Qt - respectively, cover, target material density, g / cm3; Vj - average velocity of jet micro-element, m / s; Vk - critical velocity of jet, m / s, k - determined by experiment coefficient).
When the five-axis steel pipe cutting machine realizes the eccentric oblique cutting process, the total depth of the torch penetration is L=∑Lik value is mainly related to the height/bottom width ratio and the cover thickness. The equation Ls=L can be established from the measured value Ls. inferred. With the value of k, it is possible to calculate the cutting depth at different height/bottom width ratios for different structural parameters of the same type and different steel tube target materials.
The cutting torch cutting parameters of the steel pipe cutting machine are theoretically and practically known. The cutting angle 2a is the best penetration depth of 80-90°. For the convenience of processing, it is generally 90°; when G=1.5d, it is the best positioning height. The increase does not contribute much to the penetration depth; the optimum positioning height is the torch and H=d; the cutting effect is best when the wall thickness of the steel pipe to be cut is b=0.05-0.08d.
Therefore, it can be seen that, in the case of determining the b value, the penetration depth L has a one-to-one correspondence with the bottom width d. Therefore, the cutter parameters for designing the penetration depth can be obtained in the reverse order of the cutter penetration depth calculation method. After calculating the k value using the k value calculation program based on the bottom test data, the cutter parameters (a, b, d, G, H,) of 8 to 20 mm penetration depth Lj were calculated by the relevant parameters calculation program of the steel pipe cutter.
Taking Jiaxun Technology Xunfeng G series five-axis steel pipe cutting machine control system as an example, its linear mechanism is prolonged for G23, G34, G45 models. In principle, this delay is for plasma and flame cutting. The product is a solid, which is a gas-free delayed slag. Accurately, it should be called micro gas residue, because the G45 steel pipe cutter is also decomposed at a certain temperature during the processing except that the binder generates a small amount of gas during combustion. Gaseous oxygen. The delayed reaction is basically a process in which gaseous oxygen and FeSi act, so the ignition temperature should be sufficient to liberate the G45 processing fraction, and the reaction can be continued. In general, the ignition temperature has a lot to do with the decomposition temperature of the oxidant.
The decomposition temperature of the G45 steel pipe cutting machine is about 570 °C, but the actual temperature of the ferrosilicon extension is about 455 °C, which means that the cutting temperature is not only determined by the oxidant, but also may be related to the properties, particle size, ratio, density, viscosity of the flammable agent. The mixture and content are related. For the FeSi material steel pipe, in the process of hot cutting with G45 steel pipe cutting machine, the reaction equation is as follows: 8FeSi 7Pb3O4455°C4Fe2O3 8SiO2 21Pb When the combustion reaction temperature does not reach 1400°C, BaCrO4 can only absorb heat without decomposition, so it does not participate. The reaction acts as a "heat sink" in the reaction, slowing down the reaction rate. When the reaction temperature exceeds 1400 ° C, BaCrO4 will release oxygen to participate in the reaction.
The specification grade (silicon-iron ratio) of the ferro-silicon alloy steel pipe determines the limit burning speed of the extension. The particle size of the ferrosilicon alloy powder has a great influence on the thermal cutting treatment sensitivity (temperature) limit burning rate and delay precision. The cutting method adopted by the steel pipe cutting machine is different, and the uniformity degree of each component is large, and the wet mixing helps to improve the delay precision. The binder content should be appropriate, the content is different, and the nature of its action is also different, and it plays a flame retarding effect in a certain range, and plays a combustion-supporting effect in another range. Increasing the pressure within a certain pressure range can improve accuracy. There are few domestic researches on ferrosilicon low-burning rate deferred drugs.
Wuhan Jiabide Technology Co., Ltd. is a professional manufacturer of CNC cutting machine, CNC laser cutting machine, CNC flame cutting machine, CNC plasma cutting machine, CNC flame plasma dual-purpose cutting machine, advertising CNC cutting machine, CNC intersecting wire cutting machine, The company is always a high-tech enterprise integrating CNC products. The company always adheres to the business philosophy of “winning by quality and honesty†and adheres to the guiding principle of “service-oriented and market-orientedâ€. In the principle of customer first, the pursuit of perfect service. 24 hours to provide host display, sales, door-to-door, installation and commissioning, technical maintenance and other services. Maximize service to users.
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