Recently, at the scientific and technological achievements appraisal meeting of "Research and Application of Gas Radiation Heating System in Ship and Offshore Painting Sites", Beihai Shipbuilding Industry Co., Ltd. has the first domestic and international advanced radiant heating technology with independent intellectual property rights. The Haixi Bay Shipbuilding and Repairing Base has truly achieved green shipbuilding.
Experts from the appraisal committee said that the new technology of radiant heating has changed the traditional impression of shipbuilding and painting operations, and is the perfect application of advanced gas radiant heating technology in the shipbuilding coating process. And clearly pointed out in the appraisal opinion: "The project has independent intellectual property rights and has formed the patent technology of 'gas and radiation heating system for ship and offshore spraying sites'. The overall technology has reached the international advanced level. The research results have adopted a number of safety and Control technology measures, mature technology, safe and reliable, have great economic and social benefits for improving the level of China's shipbuilding technology and promoting national energy conservation and emission reduction."
Adhering to the concept of scientific development, sustainable development, and innovation, as early as the planning and construction of the coating workshop of the Haixi Bay Shipbuilding and Repairing Base, Beichuan Heavy Industry began to explore the use of soft radiant heating technology to replace the traditional heating mode of the painting workshop. . Pursuing environmental protection, green, improving efficiency, quality, and tackling the problem with innovative thinking, to achieve energy saving, emission reduction as the goal to conduct research, and ultimately become a dream. The project was approved by the group company in September 2008 and put into operation from 2008 to 2009. So far, two heating periods have been safely operated, realizing the substantial breakthrough in replacing the high-carbon fuel in the modern large-scale ship repairing ship base. . The project can achieve energy savings of more than 50%, reduce carbon dioxide emissions by more than 75%, and reduce heating costs by more than 50%. Greatly reduce the pollution of the environment. At the same time, due to the improvement of heating efficiency, the curing time of the paint is shortened to a large extent, and the production efficiency of the painting workshop is improved.
The research and development of new radiant heating technology is a practical measure taken by Beichuan Heavy Industry to implement the requirements of the group company and to save energy and reduce emissions. Undoubtedly, the application and promotion of this new technology is a big step for Beichuan Heavy Industry on the road of “green shipbuildingâ€.
ELECTRIC DRIVE CUTTING TORCH CARRIAGE
An improvement over mechanical guides is an electric motor-driven cutting torch carriage. The speed of the motor can be varied allowing the welder to cut to dimensions and to cut at a specific speed. A typical motor driven carriage has four wheels: one driven by a reduction gear, two on swivels (castor style), and one freewheeling. The torch is mounted on the side of the carriage and is adjusted up and down by a gear and rack. The rack is a part of the special torch. The torch also can be tilted for bevel cuts. This machine comes with a straight two-groove track and has a radial bar for use in cutting circles and arcs. A motor-driven cutting torch cutting a circle is shown in figure 4-25. The carriage is equipped with an off-and-on switch, a reversing switch, a clutch, and a speed-adjusting dial that is calibrated in feet per minute.
Figure 4-25.-Electric motor-driven carriage being used to cut a circle in steel plate.
Figure 4-26 shows an electric drive carriage on a straight track being used for plate beveling. The operator must ensure that the electric cord and gas hoses do not become entangled on anything during the cutting operation. The best way to check for hose, electric cord, and torch clearance is to freewheel the carriage the full length of the track by hand.
Figure 4-26.-Electric motor-driven carriage being used on straight track to cut a beveled edge on steel plate.
You will find that the torch carriage is a valuable asset during deployment. This is especially true if your shop is called upon to produce a number of identical parts in quantity. Such an assignment might involve the fabrication of a large supply of handhole covers for runway fixtures, or another assignment might be the production of a large quantity of thick base plates for vertical columns. When using the torch carriage, you should lay the track in a straight line along a line parallel to the edge of the plate you are going to cut. Next, you light the torch and adjust the flame for the metal you are cutting. Move the carriage so the torch flame preheats the edge of the plate and then open the cutting oxygen valve and turn on the carriage motor. The machine begins moving along the track and continues to cut automatically until the end of the cut is reached. When the cut is complete, you should do the following: promptly turn off the cutting oxygen, turn off the current, and extinguish the flame--in that order. The cutting speed depends upon the thickness of the steel being cut
Gas Cutting Machines
Gas Cutting Machines,Gas Cutter,Plasma Gas Cutting Machine,Flame Gas Cutting Machine
Changzhou Edaweld Trading Company Limited , http://www.edaweld.com