an anailís de coitianta teipeanna
Aimsíodh i táirgeadh de tíotáiniam cóimhiotal meaisínithe dromchla cáilíocht coitianta teipeanna thar creimeadh% 2c crochta liath % 2c ocsaíd craiceann níl bainte agus streak - mhaith splotch roinnt cineálacha.
1% 2c os cionn creimeadh
Iomarcach creimeadh tagraíonn do an dromchla de tíotáiniam cóimhiotal tar éis piocadh claiseanna nó míchothromas agus eile lochtanna % 2c agus an ábhar eagraíocht nochtann a difríocht % 2c go ginearálta as iomarcach creimeadh lochtanna is an cóimheas de hidreafluarach aigéad agus nítric aigéad is as cion as cion % 2c an eile cúis is é sin an pickling time is too long, the general pickling t is 1mm ~ 4min, according to the operation of the scene to adjust the technology parameters, shorten the pickling time appropriately.
2, hanging grey
Crochta fuinseog tagraíonn do an ocsaíd ceangailte leis an dromchla de an tíotáiniam cóimhiotal tar éis piocadh % 2c piocadh trí tirim tíotáiniam cóimhiotal agus aigéad ceimiceach imoibriú % 2c mar thoradh air an carnadh de ocsaídí ar an dromchla 2c an lochtanna de crochta ash is go ginearálta too i bhfad fuinseog sil-leagan ag pickling agus ní go leor sruthlú tar éis pickling. Piocadh ba chóir i gcónaí shake na codanna 2c mar sin go an imoibriú táirgí ó an dromchla de an tíotáiniam cóimhiotal off% 2c pickling a a neartú tar éis spraeáil nó sruthlú modh go bain crochta fuinseog . Baile go ginearálta tóg comhbhrúite aer agus sconna uisce measctha le ardluais uisce sruthlú páirteanna % 2c an éifeacht is maith.
3, the oxide skin is not removed
Is iad na cúiseanna de seo locht níos mó % 2c gach próiseas is féidir . Tá a bheith bocht ola bhaint % 2c nó leáite salann cóireáil am níl go leor % 2c nó piocadh réiteach teip . Nuair a tharlaíonn an locht 2c sé ba chóir a bheith ceann amháin duine go eisiamh gach féideartha fachtóirí % 2c nuair is gá % 2c is féidir a chur i an réamhchóireáil de gaineamh blasting próiseas.
4% 2c streak-mhaith splotch
Is é an cúis de seo locht go ginearálta mar gheall ar míchothrom imoibriú . An féidir a bheith eisiata ag croitheadh na páirteanna le linn piocadh agus laghdú an teocht de an pickling réiteach . In suimiú an thuas lochtanna % 2c uaireanta uaireanta freisin le fáil tar éis piocadh iniúchadh de cáilithe táirgí % 2c tar éis tréimhse am 2c an dromchla de an feiniméan de spotaí. Le haghaidh seo feiniméan % 2c anois níos lú taighde % 2c d'fhéadfadh a bheith mar gheall ar an dromchla de an iarmharach aigéad tar éis piocadh nó ina dhiaidh sin táirgeadh de creimneach meáin tugtha isteach an láithreacht de an comhpháirteach gníomh de strus in an micreascópach brath de an ginearálta an feidhmíocht de a úsáid 2c is féidir a bhaint ag an modh de pickling arís % 2c ach an béim páirteanna go neartú an dara piocadh tar éis an dehydrogenation próiseas.
Dara% 2c na fachtóirí a dhéanann difear an meaisínithe feidhmíocht de tíotáiniam cóimhiotal
Thermal conductivity, modulus of elasticity, chemical activity and alloy type and microstructure are the main factors affecting the machining performance of titanium alloy. Titanium alloy thermal conductivity is small, about 1/3 of iron, the heat generated during machining is difficult to release through the workpiece; at the same time, due to the small specific heat of titanium alloy, the local temperature rises quickly during processing, therefore. It is easy to cause the tool temperature is very high, so that the tip of the tool sharp wear, service life is reduced. Experiments have proved that the cutting tool tip temperature of titanium alloy is 2-3 times higher than that of cutting steel. Titanium alloy low modulus of elasticity, so that the processed surface is prone to rebound, especially the processing of thin-walled parts rebound is more serious, easy to cause strong friction between the back face and the processed surface, thereby wearing the tool and chipping. Titanium alloy chemical activity is very strong, high temperature is very easy with oxygen, hydrogen, nitrogen role, so that its hardness increases, plasticity decreases, in the heating and forging process of the formation of oxygen-rich layer of machining difficulties. Titanium alloys with different alloy compositions have different machining properties. In the annealed state, a-type titanium alloy has better machining performance; a + -type titanium alloy is second; -type titanium alloy has high strength and good hardenability, but the worst machining performance.
In view of the above, in order to carry out the machining of titanium alloy with high efficiency and high precision, corresponding measures should be be taken to avoid the generation of defects in processing.
Tríú, an staidéar de éagsúla meaisínithe de tíotáiniam cóimhiotal
Tá go leor modhanna de tíotáiniam cóimhiotal meaisínithe % 2c den chuid is mó lena n-áirítear % 3a casadh % 2c muilleoireacht % 2c leadránach 2c druileáil% 2c meilt% 2c cnagadh % 2c sábhadh % 2c EDM agus mar sin ar.
1% 2C tíotáiniam cóimhiotal casadh agus leadránach
The main problems of turning titanium alloy are: high cutting temperature; more serious tool wear; large cutting rebound. Under suitable machining conditions. Turning and boring is not a particularly difficult process. For continuous cutting, mass production or large metal removal cutting, generally use carbide tools, when forming cutting, turning groove or cut off, suitable for adjusting steel tooling, metal ceramic tools are also used. As with other machining operations, cutting interruptions can be avoided by always using a constant forced feed. Do not stop or slow down during cutting. Generally do not cut but cool sufficiently; the coolant may be a 5 per cent aqueous sodium nitrate solution or a 1/20 soluble oil emulsion solution in water. Before forging, turning the original bar surface oxygen-rich layer using carbide tools, the cutting depth should be greater than the thickness of the oxygen-rich layer, cutting speed of 20 ~ 30m/min, feed 0.1 ~ 0.2mm / r. Boring is finishing, especially for thin-walled titanium alloy products in the boring process, should be prevented from burns and deformation of the parts clamping.
2% 2C tíotáiniam cóimhiotal druileáil
Titanium alloy drilling is easy to grow and thin curly chips, while drilling heat is large, easy to make excessive accumulation of chips or adhesion in the drilling edge, which is the main reason for the difficulty of drilling titanium alloy. Drilling should use a short and sharp drill bit and low-speed forced feed, the support bracket should be tight, and should be given to repeat adequate cooling, especially deep hole drilling. During drilling the drill bit should be kept in the hole and not allowed to idle in the hole, and a low and constant drilling speed should be maintained. Drilling through the hole should be careful, when about to drill through, in order to clean up the drill bit and drill hole, and to remove drilling debris, it is best to return the drill bit, and finally break the hole using forced feed, so that you can get a smooth hole.
3% 2c Cnagáil de tíotáiniam cóimhiotal
Cnagadh de tíotáiniam cóimhiotal is dócha an is mó deacair meaisínithe próiseas. Nuair cnagadh % 2c an tíotáiniam sliseanna eisiamh tá srianta agus dian galling tendency beidh luaidhe go lag snáithe oiriúnach % 2c mar thoradh air i sconna jamming nó breakage . Ag an críochnú de cnagadh % 2c an tíotáiniam claonadh go tirim agus níos doichte ar an sconna. Dá bhrí sin% 2c ba chóir iarracht a a sheachaint an próiseáil de dall poill nó ró fada trí-poll % 2c in ord chun cosc an inmheánach snáithe dromchla garbh thiocfaidh chun bheith mór nó briste cón feiniméan . Ag an céanna am céanna 2c an céanna am céanna an cnagadh modh ba chóir a bheith feabhsaithe go leanúnach % 2c mar an ais imeall mar an cúl imeall ag barr an fiacail meilt aiseach sliseanna bhaint groove agus so on. On the other hand, the tap with oxidised, oxidised or chrome-plated surface is used to reduce the bite and wear.
4% 2cSwing de tíotáiniam cóimhiotal
Nuair sábhadh tíotáiniam cóimhiotal% 2c íseal dromchla luas agus leanúnach éigean beatha ba chóir a úsáid . Turgnaimh tá cruthaithe go an fiacail spásáil de 4.2mm % 7e 8.5mm garbh fiacla de ard-luas cruach chonaic lann is oiriúnach do sábhadh tíotáiniam cóimhiotal 2c an chonaic lann fiacail achar ó an tiús de an píosa oibre % 2c go ginearálta 2.5mm 7e 25.4mm% 2c an thicker an ábhar tiús % 2c an níos mó an fiacail achar. Ag an céanna am ní mór a chothabháil an éigean beatha cumas agus an ag teastáil coolant.
5% 2C tíotáiniam tábla ór leictreach urscaoileadh meaisínithe
Tíotáiniam cóimhiotal leictreach urscaoileadh meaisínithe éilíonn uirlisí agus píosaí oibre idir - an oibriú bearna . Bearna raon is fearr is fearr tógtha i % 7b % 7b% 7d 7d 7d05mm 0.4mm % 2c níos lú bearna is coitianta a úsáidtear i na riachtanais de réidh dromchla críochnú % 2c níos mó bearna is úsáidtear in na riachtanais de tapa bhaint de miotail roughing . Copar agus since fearr mar leictreoid ábhair.
Trí an thuas anailís agus taighde % 2c na cúiseanna de an teip de an dromchla cáilíocht de tíotáiniam cóimhiotal meaisínithe tá díorthaithe % 2c agus a éagsúlacht de modhanna in an próiseáil tá anailís % 2c mar mar chun a fháil amach praiticiúla bealaí chun réiteach na fadhbanna de an dromchla cáilíocht de tíotáiniam cóimhiotal meaisínithe.
