Use pull up drag type to be being used at centrifugal and pouring the pipe fitting of crude oil undertakes deep Kong Zuan processes work is unusual. After be being machined to achieve centrifugal and pouring the aperture surface of the pipe fitting of crude oil is flowing and the wall of aperture is large even, the setting becomes the broach of deep aperture drilling machine to play way of the work that drag type up. Use deep aperture drilling machine to undertake processing work, far not just task of bore of be confined to is so simple. Still can have such treatment exercise job, if use drill,treatment exercise improves the quality of the aperture after rough machining. The aperture diameter after the rough machining of these pipe fitting is inhomogenous, its express look unfamiliar to become cortex of a lot of oxidation. Below this kind of circumstance, if should use these pipe fitting as of liquid medium pouring conduit cannot be used. Such pipe fitting is in petro-chemical industry is to use as of the cracking device of crude oil. Technology of crude oil cracking comes out by Russia research and development originally. This technology centered know-how of a lot of technologies. Total institute of science and technology of material of Russia Sanket Promety besides material of research and development, return the facility with corresponding research and development. Use at the pipe fitting project of device of crude oil cracking for research and development, the different pipe fitting that total institute of science and technology of material of Promety of this Russia Sanket used 7 kinds of internal diameter to be 9000mm for the 80~150mm, biggest length in all is out of shape undertake study an experiment. These pipe fitting will be used below condition of unusual high temperature. The material of pipe fitting is those who contain chromium of high class status and nickel is antirust and high temperature resistant steel. Anyhow, to the equipment design personnel of Russia, without off-the-peg average level material can be used. For this, they decide proper motion research and development a kind of special alloy material, now, this kind of special alloy material already obtained patent. In addition, oil expert asks the diametical size essence of this kind of pipe fitting is accurate, have oneness. If pipe fitting wall is large,existence is worn deviation and change, so, distributing in tall stress not all pipe fitting rupture can be caused below the circumstance, use as especially centrifugal and pouring the pipe fitting of crude oil is more such. Graph 1 after undertaking thick bore processes work, when taking out broach, broach have the aid of goes out at directing device sails up. Formed to pull so drag treatment work way to invent crude oil of technology of deep Kong Zuan to be inside high-pressured conduit current, if the exterior quality of pipe fitting aperture is not good, can affect crude oil current, cause very big pressure loss thereby, also can leave deposit to pile up in the surface of aperture at the same time. At this moment, the experts of Russia Sanket used deep Kong Zuan to machine a method to machine these pipe fitting, invented deep aperture to get a technology thereby. The research and development of a business that is located in Detingen/Erms of German Schwaben area gave bed of a kind of large deep Kong Zuan, mastered use at centrifugal and pouring the pipe fitting deep aperture of crude oil gets processing technique. To the deep Kong Zuan of afore-mentioned pipe fitting treatment works to be able to use sheet to provide the tool of systematic foundation only, when treatment works, single pipe formed annular chamfer between systematic tool and pipe fitting hole wall, through these annular chamfer implementation refrigerant furnishs. The giant stride that broach makes of hard metal, bits of a dig is passed by refrigerant when be gotten completely bits of buccal general dig from get treatment area to rush to be in charge of into bore, reach dig bit finally conveyor. Pull drag treatment work way to be below normal circumstance, the bit that gets treatment work passes the pipe fitting of treatment first, direct subsequently board commutation circuitry has cut, make a straight hole inside pipe fitting aperture. And use at centrifugal and pouring deep Kong Zuan machines the pipe fitting of crude oil to use means of another kind of exercise, because general bore machines work way, cannot using at centrifugal and pouring a straight hole is made inside the pipe fitting of crude oil, the aperture of pipe fitting cannot be achieved of 100% straight. Below this kind of circumstance, the aperture of machines pipe fitting has after every 1m is long about of 1mm bend. To solve this problem, get treatment tool must can bend with what follow a pipe fitting undertake processing work. Choose deep aperture to get processing technique, broach directs device is used can turn around circumgyrate machines a principle, when processing work namely, oriented board before moving in cut device, formed to pull so pull treatment work way, the full-length wall that reached pipe fitting aperture then is large even purpose. In the item of treatment of technology of deep Kong Zuan that picking sheet of in order to to be in charge of systematic tool to be a foundation, project research and development just machines exercise equipment limited company to undertake cooperative with partner BTA deep Kong Zuan, the purpose is to make the surface of pipe fitting aperture as far as possible flowing. Before this, people uses rough machining broach to undertake machining all the time, undertake with broach of one dig bits the adjustment with final finished product is machined. And the oriented system that the deep Kong Zuan of BTA company research and development processes operation unit to one contains hard plate, this system fluid pressure type props up the Kong Zhong in pipe fitting, in order to balances the irregular sex of hole wall. Nextpage deep Kong Zuan has hose of a hydraulic pressure in treatment canal, using so pull when dragging type deep Kong Zuan to undertake processing work, derive inside the pipe fitting aperture from treatment dig bits is nonexistent also problem. So, this kind of deep Kong Zuan processes work, the dig bit that does not need a setting to must be installed so derives a such structure. An important detail is, setting dial is very important. The setting standard of the over all dimension of these dial is with dig bits deepness 5mm is fiducial. BTA company chooses the material that fights the stainless steel with strong fracture toughness to serve as production dial. Graph 2 machine on drilling machine of deep aperture of ML 500 series centrifugal and pouring the special tool that the deep Kong Zuan that the pipe fitting of crude oil uses BTA company to develop processes unit machines work flow to be as follows: Above all, drilling machine operates personnel general most be as long as the pipe fitting Zhang Jin of 9m is on deep aperture drilling machine, then, by bore tool treatment gives the rough machining opening of whole pipe fitting, install mount broach. Next, undertake pulling dragging type bore, till pipe fitting returns position of rest afresh again. Turn over direction to undertake dig is cut pounding type then, dig cuts ongoing travel cut. The deepness that dig cuts is only 0. 5mm. After completing afore-mentioned treatment process, cut dig of the along with that get a pipe broach to be pulled from inside machining pipe fitting. Later, tool fluid pressure type returns carry to have cut all right. Get a canal to prop up in oriented board on, dig cuts broach to be made by artificial synthesis material. Adopt such measure to be able to prevent to be answered in the tool when pulling, make pipe fitting hole wall is damaged. Below normal circumstance, the cutting difficulty of high temperature resistant tall alloy material will be very great. For this, besides taking afore-mentioned step, in the light of cutting from time to tome dig is cut fly off, it is cut board to install a dig to cut even defend bar. In addition, deep Kong Zuan machines a tool to also must install two to defend bar. Ensuring long service life grows the pipe fitting that is 9m is not a sheet compositive product. Manufacturer home still can offer to grow the nozzle material that is 3m. User general this nozzle material and use at centrifugal and pouring the pipe fitting of crude oil solders together. Solder craft requirement must achieve a corresponding essence to be spent definitely, so that can make sure after treatment the hole wall of pipe fitting is flowing. In addition, limited company of equipment of exercise of treatment of BTA deep Kong Zuan is very good also solved weld quench sclerosis handles an issue. This proved the structural program of deep aperture drilling machine is sound not only, and still ensured the dependability of whole treatment flow. Use at centrifugal and pouring of crude oil be as long as the pipe fitting of 9m still combines layer of a detonate, such, if pipe fitting material has inhomogenous sex, it is the most dangerous to became those who endanger pipe fitting service life killer. But, the blemish problem with the solves existence inhomogenous data that the deep aperture of ML 500 series of BTA company research and development gets bed plan plan to be able to succeed however. Use this model when deep aperture drilling machine undertakes processing work, the dial of broach can act well inside the whole length limits of pipe fitting. To can make bracket of the along with that get a pipe short lever, oriented slide block and drilling machine center are worn sail bore, overall length of drilling machine of deep aperture of ML 500 series spends a setting to be 25m, double be length of treatment pipe fitting. Deep aperture of ML 500 series gets the bed is a stability to be able to have the deep aperture drilling machine of fine tuning. The complete set structure of this deep aperture drilling machine all has the function of damp vibration. For damp vibration, the base of this machine tool still contains two special consolidate unit that have concrete filler. This model the design plan that the other structural member of deep aperture drilling machine also adopts extraordinary stability, if feed ages lever has inclined mill a tooth-like part of anything, the purpose is to make vibration is achieved the smallest change. Graph 3 centrifugal and pouring the with treatment hind effect before the pipe fitting of crude oil machines: Before treatment centrifugal and pouring the surface of pipe fitting hole wall of crude oil (A) with treatment hind centrifugal and pouring the surface of pipe fitting hole wall of crude oil (B) , before treatment centrifugal and pouring it is good besides stability that the surface of pipe fitting hole wall of crude oil already made drilling machine of very thick deep aperture of series of oxidation skin ML 500 beyond, its operated control to also realize maximize. Because the rough machining of pipe fitting is used,play way of the work that drag type, must install rough machining broach again after getting a canal to sail so, because use the rod of slide block tine of special configuration, so operation personnel can be close to lever of slide block tine from the back. Such, even if the pipe fitting work with the greatest treatment, also but very convenient pipe fitting workpiece installation is on deep aperture drilling machine. After the rough machining of the pipe fitting that finish, want to undertake the dig of pipe fitting aperture is cut, the service life impact of this working procedure to deep aperture drilling machine is not big, this working procedure is the most important is to should ensure the exterior quality of pipe fitting hole wall. The exterior quality of the pipe fitting hole wall that drilling machine of deep aperture of series of use ML 500 machines is clearly (graph 3) : The Ra of surface of hole wall of user hope pipe fitting is worth ≤ 1 μ M, and the Ra of the surface of pipe fitting hole wall that drilling machine of deep aperture of use ML500 series machines is worth just actually to maintain in 0.
4~ 0.
Inside the limits of 7 μ M. CNC Milling