Mefuta e fapaneng ea li-cutters tsa PDC

Ho cheka ke ts'ebetso ea bohlokoa indastering ea oli le khase. Likotoana tsa PDC (tseo hape li bitsoang Polycrystalline Diamond Compact bit) li sebelisoa hangata ts'ebetsong ea ho cheka. PDC Bit ke mofuta oa kotopo o nang le li-cutters tse ngata tsa Polycrystalline Diamond (PCD) tse khomaretsoeng 'meleng le ho poma majoe ka ketso ea ho kuta pakeng tsa ba sehang le lefika.

PDC cutter ke karolo ea bohlokoa haholo ea boro, hape ke pere ea ho cheka. Libopeho tse fapaneng tsa PDC cutter li reretsoe ho kopana le maemo a fapaneng a mosebetsi. Ho khetha sebopeho se nepahetseng ho bohlokoa haholo, se ka ntlafatsang katleho ea hau ea ho sebetsa le ho fokotsa litšenyehelo tsa ho cheka.

Hangata, re arola sehahi sa PDC ka tsela e latelang:

1． PDC li-cutters tse bataletseng

2． Likonopo tsa PDC

Li-cutters tse bataletseng tsa PDC li sebelisoa haholo bakeng sa ho cheka likotoana merafong le masimong a ho cheka oli. E ka sebelisoa hape ho "diamane core bit" le PDC e behang.

Melemo ea mantlha bakeng sa li-cutters tsa PDC:

• Boima bo phahameng (botlase ba porosity)

• Homogeneity e phahameng ea sebopeho le sebopeho

• Ho apara ka holimo le ho hanyetsa tšusumetso

• Botsitso bo phahameng ba mocheso

• Molemo ka ho fetisisa kakaretso tshebetso fumaneha ka 'marakeng

PDC sehang sehang bophara bophara ho tloha 8 ho 19mm ::

Litlhaloso tse ka holimo ke tsa basebelisi ba ka khethang ho tsona. Ka nako e ts'oanang, litlhaloso tse fapaneng tsa lihlahisoa li ka hlahisoa le ho sebetsoa ho latela litlhoko tsa basebelisi.

Ka kakaretso, li-cutters tse kholo (19mm ho 25mm) li mabifi ho feta li-cutters tse nyenyane. Leha ho le joalo, li ka eketsa ho feto-fetoha ha torque.

Li-cutters tse nyenyane (8mm, 10mm, 13mm le 16mm) li bontšitsoe ho cheka ka tekanyo e phahameng ea ho kenella (ROP) ho feta li-cutters tse kholo lits'ebetsong tse itseng. E 'ngoe ea lisebelisoa tse joalo ke mohlala oa limestone. Li-bits li entsoe ka li-cutters tse nyane empa tse ngata tsa tsona li khona ho mamella ts'ebetso e phahameng haholo.

Ho feta moo, li-cuttings tse nyane li hlahisa li-cuttings tse nyane ha li-cuttings tse kholo li hlahisa li-cuttings tse kholoanyane. Li-cuttings tse kholo li ka baka mathata ka ho hloekisa lesoba haeba mokelikeli o sa khoneng ho phahamisa li-cuttings.

PDC e nang le

Ho roala PDC ho sebelisoa e le ntho e thibelang khoho bakeng sa enjene ea ho theola, e sebelisoang haholo lik'hamphaning tsa lits'ebeletso tsa oli le lifeme tsa makoloi a tlase. PDC bearing e na le mefuta e fapaneng ho kenyelletsa PDC radial bear, PDC thrust bear.

Li-bearings tsa PDC li hanyetsa haholo ho apara. Ha ho bapisoa le li-tungsten carbide tsa setso kapa li-bearings tse ling tse thata tsa alloy, bophelo ba li-bearings tsa daemane bo bolelele ba makhetlo a 4 ho isa ho a 10, 'me li ka sebetsa ka mocheso o phahameng (hona joale mocheso o phahameng ka ho fetisisa ke 233 ° C). Sistimi ea ho jara ea PDC e ka monya mojaro o feteletseng ka nako e telele, 'me tahlehelo e tlase ea likhohlano ka har'a kopano ea ho jara e eketsa matla a mochini o fetisoang.

Likonopo tsa PDC li sebelisoa haholo bakeng sa ho cheka ha DTH, cone bit, le khetho ea daemane.

Li-pick tsa daemane li sebelisoa haholo bakeng sa mechini ea merafo, joalo ka meropa e tsoelang pele ea morafo, meqomo ea Longwall shearer, metjhini e boring ea kotopo (motheo oa mochini oa thebe, mochini oa ho cheka oa rotary, tunnel, meropa ea mochini oa lithapo, joalo-joalo)

Likonopo tsa PDC haholo-holo li kenyelletsa:

(1) Li-buttons tsa PDC: tse sebelisoang haholo-holo bakeng sa ho cheka ha DTH.

(2) PDC conical dikonopo: haholo sebelisoa bakeng sa khoune bitana.

(3) Li-buttons tsa PDC tsa parabolic: haholo-holo tse sebelisetsoang ho itšeha ka thuso.

Ha ho bapisoa le likonopo tsa tungsten carbide, li-buttons tsa PDC li ka ntlafatsa khanyetso ea abrasive ho feta makhetlo a 10.

PDC domed likonopo

Li-conical cutters tsa PDC

Likonopo tsa PDC tsa parabolic

Ntle le boholo bo tloaelehileng, re ka boela ra hlahisa setšoantšo sa hau.

Rea u amohela ho fumana li-cutters tsa zzbetter PDC, ts'ebetso e ntle haholo, boleng bo ts'oanang, le boleng bo holimo.