【正文】 m can m eet t he nat ional st andar d in t he hexagon of hexagons f ixt ur e clam ping r equir em ent s. Seal par t s 32m m weld can m eet t he lengt h r equir em ent . Thickness 8m m t o t ight en and r em oving ar e f ixt ur es r equir ed t hickness t hickness of 10M M is obt ained in accor dance wit h hose, able t o m eet gas r equir em ent s. Seal par t 1 int er nal dimensions φ 106 according to the diam eter of the welding parts, and meets the test requirements. M125 is countries need an inner t hr ead diam et er . To sum up, sealed par t 2 of t he design f or which sour ces ar e available, in line wit h t he m echanical design r equir em ents, but also f acilt ate t he m anufact uring process of the par ts, in line wit h t he econom ic, easy processing characterist ics, m at er ial select ion of Duralumin alloy. Surf ace aft er pro Sealing should have enough pr eload, is a t wosided m andat ory sealing. Usualy in connect ion wit h a ball in one of the upper and or lower stem is equipped wit h t hrust bear ing. Float ing ball valve design should f ocus on sealing mat er ial can wit hstand t he spher e of medium load. Because spher es wor k under medium load t o export all seals, t herefor e, this f loat ing spher e is widely used in low pr essur e ball valves. In additon, t he floating ball valve bal is f loat ing, under media pr essur e, sphere produces a cert ain amount of displacement and pression on the sealing r ing on t he expor t side, ensure t he outlet seal, is a single m andatory sealing. Summary: select a fixed bal valves bal valves f or tooling. Purchase access t o ball valve, type: Q617F16C DN20, explains: Q ball valve, 6 pneumat ic dr ive (wr it e 3 Turbo tr ansmission, 9 is t he elect ric dr ive) , 1 scr ew t hread ( wr ot e 4 f lange conect ion), 7 f ixed ( writ e 1 is f loat ing), soft seal PTFE f ( writ ten h is hard keys Select ion of air pressors， Because t he par ts are not very big, bubbles was obser ved less obvious to t he naked eye, so f inding ways t o buble became obvious, Icame up wit h a buble m et hod is in t he fixt ur e sur face. I n this way, if t here is a bubble, it wil bee ver y apparent . Can be well observed. gas tight ness t ols using m et hod 1, put he par ts int o f ixtur es. 2, t he fixt ur e in t he sink. 3, open t he bal valve f or gas. 4, aft er the t esting is plet ed, opening another ball valves f or gas. 5, r emove t he welding part s, repeat t he st eps above, f or examination. 6 conclusion t his art icle pleted bef ore a rockets Cap welding process pr eparat ion and inspection of welded air t ight f ixtures in t wo part s, the main t asks are as folows: ( 1) by analyzing t he part s of t he r ole, explains the im port ance of t he f ront cover, it 39。s there, pr ot ect the warhead f rom wind and wat er erosion, to ilust r at e t he f r ont cover of r esearch is of great signifcance. ( 2) t hr ough the analysis of part s, accor ding t o the finished par t drawings and specif ications, analysis of inished par ts machining, m achining m et hod of deter mining necessar y. (3) the refer ence part shape select ion of welding jigs, t o facilt ate t he clamp at t he same tim e, to f acilt at e t he welding. (4) select t he appr opr iate welding method and by m at er ial and st ructure. ( 5) welding, t he welding according to t he welding process. (6) examinat ion of welding qualit y, aluminum welding methods of inspect ion, inspection if not qualif ied, you can carr y out awelding, cost savings, but not f or a second weld, if , par t destr oyed. ( 7) accor ding t o t he shape, t hink design a t ol t o t est he air t ightness, not only to m eet t he test ing requir ement s, but also f or 目錄 第一章 質(zhì)量的挑戰(zhàn) .......................................................................................................... 6 查看他人的工作 .......................................................................................................... 6 質(zhì)量并不免費(fèi) .............................................................................................................. 7 合理評(píng)價(jià)同級(jí)評(píng)審 ...................................................................................................... 9 同級(jí)評(píng)審、測(cè)試和質(zhì)量工具 .......................................................................................11 能夠評(píng)審什么 ............................................................................................................ 13 對(duì)質(zhì)量的個(gè)人承諾 .................................................................................................... 14 第 2 章 來自朋友的幫助 .................................................................................................. 16 查找別人的錯(cuò)誤 ........................................................................................................ 16 評(píng)審和小組文化 ........................................................................................................ 17 文化的影響 ............................................................................................................... 18 評(píng)審與管理者 ........................................................................................................... 19 為什么人們不愿意實(shí)施評(píng)審 ..................................................................................... 21 克服對(duì)評(píng)審的抵觸情緒 ............................................................................................ 22 同級(jí)評(píng)審的評(píng)審級(jí)別 ................................................................................................. 25 為評(píng)審制定計(jì)劃 ........................................................................................................ 26 評(píng)審的指導(dǎo)原則 ........................................................................................................ 27 第 3 章 同級(jí)評(píng)審方法的正式化頻譜 ................................................................................ 29 正式化頻譜 ........................................................