Hydraulic pressure makes the electron beam that use a tube solder process temperature is measured reach control

Welding Process Including The Manufacture Of Welding Fixture And Welding Parameter Are Also Optimized To Accomplish The Hydraulic Cylinder ' S Welding.

At The End, we Successfully Completed The Task And Meet The Customer ' S Requirements.

For The Moment This Methode Has Been Used In Practical Batch Producing.

Keywords: Hydraulic Cylinder, electron Beam Welding, hydraulic pressure of Temperature Controll preface is made using a tube is our country some model a component in engine, wait for spare parts composition by sealing ring of canister of lid, line, piston, balata. Through vacuum electron beam solder general lid and line canister are assembled rise. Following plan institute inspect structural diagram. Decision of its structure characteristic is right solder there is the following and special demand in the process: 1) package temperature rise wants small by on the graph sees hydraulic pressure make moved the many place inside the canister to use balata sealing ring, solder according to designing a requirement place of 20mm of welding line center is apart from in the process, solder highest temperature cannot exceed 100 ℃ in the process. If temperature rise is too fast, with respect to meeting burn, even burn down sealing ring, make sealing ring invalidation. 2) lumen is not had splatter content once generation of welding line the reverse side splatters content or solder tumour fall off, flow into hydraulic pressure to make the lumen that use a tube, can move in the piston the surface inside cylindrical shell is brought about to pull injury or sealing ring attaint in the process, cannot have sealed effect, bring about whole hydraulic pressure to make move a canister to discard as useless. 3) solder be out of shape want little hydraulic pressure to make the wall that use a tube thick only 2mm, solder easy generation is out of shape in the process, cause hydraulic pressure to make the piston that use a tube be in cannot move normally, because this designs a requirement,its ovality cannot exceed 0.

02mm. Integrated afore-mentioned, on one hand this component is out of shape to soldering have firm demand, because combine the lumen when soldering,assemble near welding line additionally have balata weather strip, accordingly, to soldering process component temperature has strict restriction, this gives solder the process brings special difficulty. Splatter content and be out of shape can solder through form of logical choice connect, control craft parameter undertakes controlling, and the lack of respect of strict control technology of package temperature rise is accumulated and experience, accordingly, solder the strict control of process component temperature makes this component whether the key that assembles successfully, need undertakes experiment and fumbling mainly. Indoor workpiece measures 1 vacuum the actor of lukewarm method is chosen 1.

The 1 actor that measures lukewarm method chooses BC 200 100 years one, he Xilong of grand of ancient Greek humble has made a kind expand with air severally the thermoscope that is a principle, ever since, the progress that measures lukewarm technology is mixed, phyletic and various. Commonly used measure lukewarm method classification and characteristic to see next tables. By go up the watch is comparative and visible, because need to be measured below vacuum condition lukewarm, through expanding law, pressure law, resistance standard, heat radiation law all has its limitation. And use K thermocouple to undertake measuring lukewarm, have linear good, answer fast, precision taller, measure Wen Fan to surround wider, record and control the advantage such as moderate of appropriate, price, especially the spot is carried out handy, maneuverability is strong, accordingly, we choose K couple heat to solder in electron beam the process undertakes measuring to workpiece lukewarm. The watch is commonly used measure range of lukewarm method classification and temperature of characteristic principle sort (℃ ) precision (℃ ) linearization answers a record to control the price to expand mercuric thermometer - 50~+6500.

1~2 but thermometer of general and unwell cheap and organic liquid - 200~+2001~4 but general and unwell Normal Align=center> cheap bimetallic - 50~+5000.

5~5 but slower appropriate Normal Align=center> cheap pressure - 30~+6000.

5~5 but general Normal Align=center> appropriate Normal Align=center> cheap steam - 20~+3500.

5~5 is not Normal Align=center> appropriate Normal Align=center> cheap resistor is platinic (or copper) thermometer - 260~+10000.

01~5 fine Normal Align=center> is appropriate and costly thermal resistor - 50~+3500.

3~5 is not faster Normal Align=center> heats up R0~+16000 of thermometer of electromotive force thermocouple commonly aptly.

5~5 but Normal Align=center> is appropriate and costly K - 200~+12002~10 fine Normal Align=center> is appropriate and general E - 200~+8003~5normal Align=center> is appropriate and general J - 200~+8003~10normal Align=center> is appropriate and general T-200~+3502~5normal Align=center> 200~30001~10 of thermometer of general and unwell general photoelectricity is faster Normal Align=center> appropriate Normal Align=center> costly radiate makes an appointment with 100~30005~20 general Normal Align=center> appropriate Normal Align=center> costly colorimetric is slower Normal Align=center> appropriate Normal Align=center> is costly 1.

The 2 executive Normal > needs to measure vacuum the temperature of indoor workpiece, accordingly, need to solve the join problem of thermocouple and workpiece above all. In be being machined actually, we use electric capacity store can solder goes to thermocouple solder appoint measure lukewarm place, use electric capacity store can solder tinsel is narrow the compensation lead of a fixed thermocouple. Compensation lead receives the wiring terminal to obligate of welder of vacuum electron beam. In vacuum room terminal of exterior and corresponding wiring passes compensation lead join to go up to detector of itinerate of DR020R number temperature, use this recorder to be able to come true to soldering of process work temperature determine automatically, show, monitoring and record. Still can read what take and print thermocouple place to measure to solder the temperature value of process work. Normal > needs to notice when soldering actually is thermocouple of join of vacuum room interior should circle workpiece two rounds, stay to make rich the wiring terminal to obligate of welder of vacuum electron beam is received again after the quantity appropriately, prevent to solder in the process because of workpiece circumgyrate, pull thermocouple, the influence is measured lukewarm the on the rails that reachs welder to make. Normal >2 vacuum electron beam the control Normal > practice solder the control that parameter will come to achieve workpiece temperature rise. Used a pair thick copper of form of column of semicircle of about 30 ㎜ is made medicinal powder heat piece, make the appearance outside using a tube with hydraulic pressure close together joint, rise to assist medicinal powder hot action. Normal > above all, through imitate undertake craft experiments, actor choosing solders parameter is as follows: Normal > quickens voltage: 150KV Normal > solders electric current: 7.

5mA Normal > focusing electric current: 2088 MA Normal > solders speed: 20 ㎜ / S Normal > solders, be opposite imitate undertake light of visual, X, fluorescence examines, without not solder is appeared, the blemish such as crackle, stoma. Make metallographic anatomize at the same time examine, opposite figuration is good, without splatter products is crude. Normal > measures eventuate actually: In be apart from welding line center 20 ㎜ place seams area temperature rise to be 62 ℃ nearly, workpiece temperature rise controls demand of effective contented design. Normal > is on the foundation of the experiment, we had realistic package solder. Add up to completes nearly 100 package solder, without one reject, and ovality of the cylindrical shell after solder is less than 0.

005 ㎜, geometrical dimension accords with blueprint requirement. 3 conclusion Normal > electron beam solders assemble hydraulic pressure to make lukewarm method is measured to choose when using a tube economy, practical, process of workpiece temperature control is simple, effective. Machines spare parts classics measures cylindrical shell ovality actually to increase not to exceed 0.

005mm, be apart from place of welding line 20mm to solder the temperature in the process is 62 ℃ about, workpiece temperature rise controls demand of effective contented design, had thrown batch production. This method also is applied to solder of the other part that there is special demand to the temperature of package in the process solder. CNC Milling CNC Machining