Mokhoa oa ho Khetha Letlapa le Nepahetseng la Samente ea Fiber

Fiber cement board (FCB) e fetohile thepa e ka sehloohong ea kaho ka lebaka la matla a eona a phahameng, ho hanyetsa mollo, ho hanyetsa mongobo, le ho tšoarella nako e telele. Leha ho le joalo, sebopeho sa eona se ikhethang-ho kopanya samente ea Portland, likhoele tsa lehong, lehlabathe la silika, le li-additives-li na le mathata a maholo nakong ea ho itšeha: ho brittleness e phahameng (e atisang ho ba le bohale), lihlahisoa tse phahameng tsa silica (tse hlahisang lerōle la silika la crystalline le phefumolohang, kotsi ea bophelo bo laoloang ke OSHA 1926.1153), le thepa ea abrasive (ho potlakisa ho apara sakha). Bakeng sa bahlahisi, bo-rakonteraka le baetsi ba thepa, ho khetha lehare le nepahetseng la sakha ha se feela ho etsa bonnete ba hore seha se sebetsa hantle le boleng; hape e mabapi le ho ikamahanya le litekanyetso tsa polokeho, ho sireletsa bophelo ba basebetsi, le ho qoba tšenyo ea thepa.

Sehlooho sena se senya mokhoa oa ho khetha ka mokhoa o hlophisitsoeng ka ho hlahloba thepa e sehiloeng (FCB), litlhaloso tsa lehare la saw, lisebelisoa tse ts'oanang, maemo a tlhahiso, le maemo a kopo-tsohle li tsamaellana le litlhoko tsa OSHA's respirable crystalline silica standards and industry best practices.

2. Tlhahlobo ea Thepa ea Cut: Litšobotsi tsa Fiber Cement Board (FCB).

Mohato oa pele oa ho khetha lehare la sakha ke ho utloisisa thepa ea thepa, kaha li khetholla ka ho toba ts'ebetso e hlokahalang ea lehare la saw.

2.1 Sebopeho sa Motheo le Mathata a ho Seha

Liboto tsa samente tsa fiber hangata li na le 40-60% ea samente ea Portland (e fanang ka matla), 10-20% ea likhoele tsa lehong (ho matlafatsa boima), 20-30% ea lehlabathe la silica (ho ntlafatsa boima ba 'mele), le li-additives tse nyenyane (ho fokotsa ho phunyeha). Sebopeho sena se hlahisa mathata a mararo a bohlokoa a ho itšeha:

• Moloko oa lerōle la silika: Lehlabathe la silika ho FCB le ntša lerōle la silika le phefumolohang nakong ea ho itšeha. OSHA 1926.1153 e laela taolo e thata ea lerōle (mohlala, lisebelisoa tsa sebaka sa ho ntša moea / LEV), kahoo lehare la sakha le tlameha ho lumellana le lisebelisoa tsa ho bokella lerōle ho fokotsa lerōle le tsoang.
• Brittleness le bohale chipping: Matrix ea lehlabathe la samente e brittle, ha likhoele tsa lehong li eketsa ho tenyetseha hanyenyane. Matla a ho itšeha a sa lekanang kapa moralo o sa nepahalang oa leino o baka ho pshatleha habonolo, ho ama ho kengoa ha boto le boleng bo botle.
• Ho khopa: Lehlabathe la silika le sebetsa e le ho roala, ho potlakisa lehare la saw. Matrix le lisebelisoa tsa meno li tlameha ho ba le khanyetso e phahameng ea ho apara ho netefatsa bophelo bo bolelele ba tšebeletso.

2.2 Thepa ea 'Mele e Amang Khetho ea Lehare la Saha

• Botenya: Boitšoaro ba FCB bo tloha ho 1.2 ho isa ho 1.8 g/cm³. Maboto a matla a holimo (mohlala, liphanele tsa mabota a kantle) a hloka li-blade tsa sakha tse nang le lisebelisoa tse thata tsa meno (mohlala, daemane kapa tungsten carbide) ho qoba ho putlama ka potlako.
• Botenya: Botenya bo tloaelehileng ba FCB ke 4mm (likarolo tsa ka hare), 6-12mm (ho koaheloa ka ntle), le 15-25mm (liphanele tsa meralo). Liboto tse teteaneng li hloka li-blade tsa sakha tse nang le botebo bo lekaneng ba ho itšeha le matrices a thata ho thibela ho kheloha ha lehare nakong ea ho seha.
• Qetello ea bokaholimo: Smooth-surface FCB (bakeng sa lisebelisoa tsa ho khabisa) e hloka li-blade tsa sakha tse nang le meno a matle le lilae tse thibelang ho khohlana ho qoba mengoo, athe FCB e mahoashe (bakeng sa ts'ebeliso ea sebopeho) e lumella meralo ea meno e matla ho ntlafatsa ts'ebetso.

3. Litlhaloso tsa Lehare la Saw: Mekhahlelo ea Bohlokoa bakeng sa Fiber Cement Board Cutting

Ho ipapisitsoe le litšoaneleho tsa FCB le maemo a OSHA (mohlala, moeli oa bophara ba lehare bakeng sa taolo ea lerōle), liparamente tse latelang tsa blade ha li ka buisanoa bakeng sa ts'ebetso e nepahetseng le ho latela melao.

3.1 Blade Diameter: Ho Ikamahanya ka thata le ≤8 Inches

Ka bobeli ba OSHA 1926.1153 Letlapa la 1 le litokomane tse sebetsang hantle tsa lisebelisoa,lisakha tsa motlakase tse tšoaroang ka letsoho bakeng sa ho seha FCB li tlameha ho sebelisa mahare a bophara ba lisenthimithara tse 8 kapa ka tlase ho moo. Tlhokahalo ena ha e na boikhethelo:

• Ho lumellana ha pokello ea lerōle: Ho itšeha ha FCB ho itšetlehile ka lisebelisoa tsa sebaka sa exhaust ventilation (LEV). Li-blade tse kholo ho feta lisenthimithara tse 8 li tla feta matla a moea a tsamaiso ea LEV (OSHA e laela ≥25 cubic feet ka motsotso [CFM] ea moea o phallang ka inch ea bophara ba lehare). Ka mohlala, lehare la 10-inch, le ka hloka ≥250 CFM-hole hole le boholo bo tloaelehileng ba LEV ea sakha e tšoaroang ka letsoho-e lebisang ho phallong ea lerōle e sa laoleheng.
• Tšireletseho ea ts'ebetso: Li-blades tse nyenyane tse bophara ba lisenthimithara tse 4-8) li fokotsa inertia ea ho potoloha ha sesepa, ho etsa hore ho be bonolo ho laola nakong ea ts'ebetso e tšoaroang ka letsoho, haholo-holo bakeng sa ho khaola ho otlolohileng (mohlala, liphanele tsa ka ntle) kapa ho khaola ka mokhoa o nepahetseng (mohlala, ho buleha ha lifensetere). Li-blade tse kholo li eketsa kotsi ea ho kheloha ha lehare kapa ho raha morao, ho baka likotsi tsa polokeho.

Likhetho tse tloaelehileng tsa bophara bakeng sa ho seha FCB: lisenthimithara tse 4 (lisakha tse nyane tsa letsoho bakeng sa maqeba a moqotetsane), li-inch tse 6 (seha ka kakaretso sa FCB), le lisenthimithara tse 8 (liphanele tse teteaneng tsa FCB, ho fihla ho 25mm).

3.2 Blade Matrix Material: Ho leka-lekanya Rigidity le Heat Resistance

Matrix ("'mele" oa lehare la sakha) e tlameha ho mamella ho khojoa ha FCB le mocheso o hlahisoang nakong ea ho seha. Lisebelisoa tse peli tsa mantlha li sebelisoa:

• Tšepe e thatafalitsoeng (HSS): E loketse ho itšeha ka molumo o tlase (mohlala, li-touch-ups tsa kaho ea setšeng). E fana ka ho tiea ho hotle empa ho hanyetsa mocheso o fokolang-ho itšeha nako e telele ho ka baka matrix warping, e leng se lebisang ho fokotsa ho sa tšoaneng. Li-matrices tsa HSS li na le litšenyehelo tse tlaase empa li hloka liphetoho tsa lehare khafetsa bakeng sa tlhahiso ea molumo o phahameng.
• Tšepe e nang le makhapetla a Carbide: E loketse ho itšeha ka bongata bo boholo (mohlala, ho hlophisoa ha feme ea liphanele tsa FCB). Ho roala ha carbide ho matlafatsa khanyetso ea ho apara, ha motheo oa tšepe o boloka ho tiea. E ka mamella ho itšeha ho sa khaotseng ha liphanele tsa 500+ FCB (6mm e tenya) ntle le ho loana, e tsamaellana le litlhoko tsa katleho ea tlhahiso.

3.3 Moqapi oa Leino: Ho Thibela ho Chipping le ho Fokotsa Lerōle

Moralo oa leino o ama ka kotloloho boleng ba ho itšeha (boreleli ba bohale) le ho hlahisa lerōle. Bakeng sa FCB, likarolo tse latelang tsa meno li bohlokoa:

• Palo ea meno: meno a 24-48 ka lehare. Palo ea meno e tlase (meno a 24-32) ke a FCB e teteaneng (15-25mm) kapa ho poma kapele-meno a fokolang a fokotsa ho hohlana le mocheso empa a ka baka ho robeha ho fokolang. Meno a phahameng (meno a 36-48) ke a FCB a masesaane (4-12mm) kapa liphanele tse boreleli—meno a mangata a arola matla a ho itšeha ka ho lekana, a fokotsa ho phunya.
• Sebopeho sa leino: Alternate top bevel (ATB) kapa triple-chip grind (TCG). Meno a ATB (a nang le litlhōrō tse nang le mahlakore a mabeli) a loketse bakeng sa ho seha ha boreleli lisebelisoa tse robehang joaloka FCB, ha a ntse a phunyeletsa ka har'a matrix a samente ntle le ho pshatla mathōko. Meno a TCG (motsoako oa mahlakore a bataletseng le a beveled) a fana ka ts'ebetso e matlafalitsoeng bakeng sa FCB e hlabang, e leng se etsang hore a tšoanelehe bakeng sa ho itšeha ka molumo o phahameng.
• Karohano ea meno: Sebaka se sephara (≥1.5mm) se khothalletsoa ho thibela lerōle ho koala. Ho seha ha FCB ho hlahisa lerole le letle; sebaka se senyenyane sa meno se ka tšoara lerōle pakeng tsa meno, sa eketsa ho hohlana le ho fokotsa lebelo la ho itšeha. Sebaka se pharaletseng se lumella lerōle hore le phonyohe ka bolokolohi, le ikamahanye le pokello ea lerōle ea LEV.

3.4 Ho roala: Ho Ntlafatsa Ts'ebetso le Nako ea Bophelo

Liaparo tse thibelang likhohlano li fokotsa mocheso oa mocheso le ho khomarela lerōle, li lelefatsa bophelo ba lehare le ho ntlafatsa ho seha boreleli. Liaparo tse tloaelehileng tsa li-blades tsa FCB:

• Titanium nitride (TiN): Sekoaelo sa 'mala oa khauta se fokotsang khohlano ka 30-40% ha se bapisoa le mahare a sa koaeloang. E loketse ho itšeha ha FCB ka kakaretso, e thibela lerōle ho khomarela lehare, ho fokotsa nako ea ho hloekisa.
• Khabone e kang taemane (DLC): Ho roala ka thata ka ho fetisisa (thata ≥80 HRC) e hanyetsanang le abrasion ho tloha lehlabatheng la silika. Li-blades tse koahetsoeng ka DLC li ka tšoarella nako e telele ka makhetlo a 2-3 ho feta li-blades tse koahetsoeng ke TiN, e leng se etsang hore li be le litšenyehelo tse ngata bakeng sa tlhahiso ea FCB e phahameng.

4. Thepa e Bapisang: Ho Lokahanya Li-Saw Blades le Mechini ea ho Seha

Lehare la sakha la boleng bo holimo le ke ke la sebetsa hantle ntle le lisebelisoa tsa ho seha tse tsamaellanang. Ho latela tataiso ea OSHA, ho itšeha ha FCB ho itšetlehile kalisakha tsa motlakase tse tšoaroang ka letsoho tse nang le litsamaiso tse kopaneng tsa taolo ea lerōle-ebang ke local exhaust ventilation (LEV) kapa lisebelisoa tsa phano ea metsi (le hoja LEV e ratoa bakeng sa FCB ho qoba ho bokellana ha seretse se metsi).

4.1 Thepa ea Pele: Li-Saw tsa Motlakase tse Tšoaroang ka letsoho tse nang le LEV Systems

OSHA e laela hore lisakha tse tšoaroang ka letsoho bakeng sa ho itšeha FCB li tlameha ho ba le lisebelisoamekhoa ea ho bokella lerole e rekisoang(LEV) e fihlelang lintlha tse peli tsa bohlokoa:

• Bokhoni ba ho phalla ha moea: ≥25 CFM ka inch ea bophara ba lehare (mohlala, lehare la 8-inch le hloka ≥200 CFM). Bophara ba lehare la sakha bo tlameha ho lumellana le moea oa tsamaiso ea LEV-ho sebelisa lehare la 6-inch le tsamaiso ea 200 CFM hoa amoheleha (moea o feteletseng o ntlafatsa pokello ea lerōle), empa lehare la 9-inch le tsamaiso e tšoanang ha le lumellane.
• Tlhophiso e sebetsang hantle: ≥99% bakeng sa lerōle le phefumolohang. Setlhopha sa sistimi ea LEV se tlameha ho tšoara lerole la silika ho thibela ho pepeseha ha basebetsi; li-blade tsa saw li lokela ho etsoa ho lebisa lerōle nqa ho sekoahelo sa sistimi (mohlala, matrix a lehare la concave le kenyang lerole boema-kepeng ba pokello).

Ha o bapisa mahare a sakha le lisakha tse tšoaroang ka letsoho, hlahloba lintlha tse latelang:

• Boholo ba Arbor: Sekoti se bohareng sa lehare la saw (arbor) se tlameha ho ts'oana le bophara ba sekhahla sa sesepa (boholo bo tloaelehileng: 5/8 inch kapa 1 inch). Setsi se sa lumellaneng se etsa hore lehare le sisinyehe, le lebisang ho seha ho sa lekaneng le ho eketseha ha lerōle.
• Ho tsamaisana le lebelo: Li-blades tsa saw li na le lebelo le phahameng le sireletsehileng la ho potoloha (RPM). Lisakha tse tšoaroang ka letsoho tsa FCB hangata li sebetsa ho 3,000-6,000 RPM; mahare a tlameha ho lekanyetsoa bonyane boholo ba RPM ea sakha (mohlala, lehare le fuoeng 8,000 RPM le bolokehile bakeng sa sakha ea 6,000 RPM).

4.2 Thepa ea Bobeli: Mekhoa ea Phano ea Metsi (bakeng sa Maemo a Khethehileng)

Le ha LEV e ratoa bakeng sa ho seha FCB, litsamaiso tsa ho fana ka metsi (tse kopantsoeng le lisakha tse tšoaroang ka letsoho) li ka sebelisoa bakeng sa ho seha ka ntle, ho seha molumo o phahameng (mohlala, ho kenya liphanele tsa lebota ka ntle). Ha o sebelisa tsamaiso ea metsi:

• Lisebelisoa tsa lehare la saw: Khetha matrices a hanang ho bola (mohlala, stainless steel-coated carbide) ho thibela mafome ho pepesehela metsi.
• Ho roala leino: Qoba liphahlo tse qhibilihang ka metsing; Liaparo tsa TiN kapa DLC ha li na metsi ebile li boloka ts'ebetso.
• Taolo ea seretse: Lehare la sakha le lokela ho etsoa ho fokotsa splatter ea slurry (mohlala, moeli o serrated o pshatlang lerōle le metsi), kaha seretse se ka khomarela lehare mme sa fokotsa bokhoni ba ho seha.

4.3 Tlhokomelo ea Thepa: Ho Sireletsa Li-Saw Blades le Tumellano

Tlhokomelo ea kamehla ea lisebelisoa e netefatsa ts'ebetso ea blade ea saw le ho latela melao ea OSHA:

• Tlhahlobo ea masela: Lekola sekoaelo sa sistimi ea LEV (karolo e potileng lehare) bakeng sa mapetsong kapa ho se khethollehe hantle. Sekoahelo se senyehileng se etsa hore lerōle le tsoe, esita le ka lehare la boleng bo phahameng la sakha.
• Hose botšepehi: Lekola lithapo tsa sistimi ea LEV bakeng sa li-kinks kapa tse lutlang - phepelo e thibetsoeng ea moea e fokotsa pokello ea lerōle 'me e khitla lehare la sakha (ho hohla ho eketsehileng lerōleng le qabeletsoeng).
• Khatello ea mali: Netefatsa hore lehare la sakha le tiisitsoe hantle holim'a seluloana. Lehare le hlephileng lea thothomela, le baka ho phunya le ho apara pele ho nako.

5. Tlhahlobo ea Boemo ba Tlhahiso: Ho Lokisetsa Li-Saw Blades ho Litlhoko tsa Tlhahiso

Maemo a tlhahiso-ho kenyeletsoa molumo, litlhoko tse nepahetseng, le litekanyetso tsa ho lumellana le maemo-a lekanya "tekanyo ea ts'ebetso" ea khetho ea lehare la sakha.

5.1 Phatlalatso ea Phatlalatso: Molumo o tlaase vs. High-Volume

• Tlhahiso ea molumo o tlase (mohlala, ho seha sebakeng sa kaho): Beha pele ho boloka litšenyehelo le ho nkeha habonolo. Khetha mahare a carbide a HSS kapa a TiN (ka bophara ba lisenthimithara tse 4-6) bakeng sa ho seha nako le nako. Li-blades tsena li theko e tlaase ebile ho bonolo ho li fetola, 'me bophara ba tsona bo bonyenyane bo lekana le lisakha tse tšoaroang ka letsoho bakeng sa ho tsamaisa sebaka sa marang-rang.
• Tlhahiso e phahameng haholo (mohlala, tlhahiso ea feme ea liphanele tsa FCB): Beha pele ho tšoarella le ho sebetsa hantle. Khetha li-blade tsa carbide tse koahetsoeng ke DLC (ka bophara ba lisenthimithara tse 6-8) tse nang le meralo ea meno ea TCG. Li-blades tsena li ka mamella ho itšeha ho tsoelang pele, ho fokotsa nako ea ho fetoha ha lehare. Ho feta moo, li bapise le lits'ebetso tse phahameng tsa LEV (≥200 CFM bakeng sa li-blade tsa 8-inch) ho boloka tumellano le tlhahiso.

5.2 Ho Seha Litlhoko Tse nepahetseng: Sebopeho le Sekhabiso

• Structural FCB (mohlala, liphanele tse jarang moroalo): Litlhoko tse nepahetseng li itekanetse (± 1mm ​​ho mamella ho khaola). Khetha li-blade tsa meno tse 24-32 tse nang le meralo ea ATB kapa TCG-meno a fokolang a ntlafatsa lebelo, 'me sebopeho sa leino se fokotsa ho phatloha ho lekaneng bakeng sa ho kenya sebopeho.
• Mokhabiso oa FCB (mohlala, liphanele tsa ka hare tsa mabota tse nang le mahlakore a bonahalang): Litlhoko tse nepahetseng li thata (± 0.5mm ho mamella ho khaola). Khetha mahare a meno a 36-48 a nang le meralo ea ATB le likhoele tsa DLC. Meno a mangata a tiisa mathōko a boreleli, 'me ho roala ho thibela mengoallo, ho finyella litekanyetso tsa botle.

5.3 Litlhoko tsa ho Itloaetsa: OSHA le Melao ea Lehae

OSHA 1926.1153 ke tekanyetso ea mantlha ea ho seha FCB, empa melao ea lehae e ka fana ka litlhoko tse eketsehileng (mohlala, meeli e thata ea ho ntša lerōle libakeng tsa litoropo). Ha u khetha li-saw blades:

• Ho laola lerole: Netefatsa hore li-blade li tsamaisana le lits'ebetso tsa LEV (mohlala, bophara ba ≤8 inches, matrix-funneling matrix) ho kopana le moeli oa ho pepeseha ha silika o phefumolohang oa OSHA (50 μg/m³ nakong ea phetoho ea lihora tse 8).
• Ho ngolla polokeho: Khetha li-blades tse nang le li-labels tse hlakileng tsa tšireletso (mohlala, boholo ba RPM, bophara, ho lumellana ha thepa) ho lumellana le litlhoko tsa ho ngola thepa ea OSHA.
• Tšireletso ea basebetsi: Le hoja li-saw blades li sa fane ka tšireletso ea phefumoloho ka ho toba, bokhoni ba tsona ba ho fokotsa lerōle (ka moralo o nepahetseng) bo phethahatsa tlhokahalo ea OSHA ea li-respirators tsa APF 10 libakeng tse koaletsoeng (le hoja ho itšeha ha FCB hangata ho le ka ntle, ho latela mekhoa e metle).

6. Maemo a Kopo: Ho Fetola Li-Saw Blades ho Maemo a Setsi

Maemo a ho itšeha a FCB a fapana ho ea ka tikoloho (ka ntle vs. ka hare), mofuta oa sehiloeng (ho otloloha khahlanong le.

6.1 Ho Seha Ka Ntle (Boemo ba Pele ba FCB)

Ho latela mekhoa e metle ea OSHA, ho itšeha ha FCB hoe ratoang kantleho fokotsa ho bokellana ha lerōle (ho itšeha ka tlung ho hloka lisebelisoa tse eketsehileng tsa ho ntša metsi). Maemo a kantle a kenyelletsa:

• Ho kenngoa ha liphanele tsa ka ntle: E hloka ho khaola ho ea holimo le ho nepahala (ho lumellana le menyetla ea lifensetere / mamati). Khetha li-inch tse 6 tsa meno tsa ATB (meno a 36) a nang le liphahlo tsa TiN - tse nkehang bakeng sa ts'ebeliso ea sebaka sa marang-rang, 'me seaparo se hanela mongobo o kantle.
• Ho seha ka tlas'a marulelo: E hloka ho khaola ka potlako, ho otlolohile ho FCB e tšesaane (4-6mm). Kgetha 4-inch TCG meno blades (meno a 24) - bophara bo bonyenyane bakeng sa ho fihlella ha bonolo marulelong, 'me meno a TCG a sebetsana le marulelo a hlabang a FCB (litekanyo tse phahameng tsa silica).
• Mehopolo ea boemo ba leholimo: Ha ho le mongobo kapa ha pula e na ka ntle, sebelisa li-blade tse thibelang ho bola (mohlala, matrices a tšepe e sa jeleng paate). Maemong a moea o matla, khetha li-blade tse nang le meralo ea meno e leka-lekaneng ho fokotsa ho thothomela (moea o ka holisa ho sisinyeha ha lehare).

6.2 Ho Seha ka Ntlong (Maemo a Khethehileng)

Indoor FCB ho itšeha (mohlala, ho kenya karohano ea ka hare meahong e koetsoeng) ho lumelloa feela kataolo e ntlafetseng ya lerole:

• Khetho ea lehare la saw: Sebelisa 4-6 inch blades (bophara bo bonyenyane = ho fokotseha ha lerōle) ka liphahlo tsa DLC (ho fokotsa ho khomarela lerōle). Qoba li-blades tse 8-inch ka tlung - li hlahisa lerōle le lengata, esita le ka lisebelisoa tsa LEV.
• Phello e thusang: Kopanya lehare la sakha le li-fan tse nkehang habonolo (mohlala, li-fan axial) ho tlatselletsa lits'ebetso tsa LEV, tse lebisang lerōle libakeng tsa moea. Matrix ea lerōle ea lerōle e lokela ho ikamahanya le tataiso ea moea oa fan.

6.3 Mofuta oa Khaola: E otlolohileng vs. Curved

• Likotlolo tse otlolohileng (tse tloaelehileng haholo): Sebelisa li-blade tsa radius tse felletseng (mahare a tloaelehileng a chitja) a nang le meno a ATB kapa a TCG. Li-blades tsena li fana ka likheo tse tsitsitseng, tse otlolohileng bakeng sa liphanele, li-studs kapa trim.
• Li-curved cuts (mohlala, li-archways): Sebelisa mahare a bophara bo moqotetsane (≤0.08 inch thick) a nang le meno a matle (48 meno). Li-blades tse tšesaane li tenyetseha haholoanyane bakeng sa maqeba a kobehileng, 'me meno a matle a thibela ho phunya ntlheng e kobehileng. Qoba li-blades tse teteaneng - li thata ebile li atisa ho robeha nakong ea ho itšeha ho kobehileng.

7. Qetello: Moralo o hlophisitsoeng oa Khetho ea Lehare la Saw

Ho khetha lehare le nepahetseng la fiber samente ea ho itšeha ho hloka mokhoa o akaretsang o kopanyang litšoaneleho tsa thepa, litekanyetso tsa lehare la saw, ho lumellana ha lisebelisoa, maemo a tlhahiso, le maemo a kopo-kaofela ha li ntse li khomarela litekanyetso tsa ts'ireletso tsa OSHA. Ho akaretsa moralo oa khetho:

1. Qala ka boitsebiso: Sekaseka boima ba FCB, botenya, le silika ho hlalosa litlhoko tsa blade ea sakha ea mantlha (mohlala, ho hanyetsa ho roala ha liboto tse teteaneng haholo, ho laola lerole bakeng sa liboto tsa silika tse phahameng).
2. Notlela liparamente tsa lehare la senotlolo: Etsa bonnete ba hore bophara ba ≤8 lisenthimithara (ho lumellana le OSHA), khetha matrix / leino / ho roala ho latela bophahamo ba tlhahiso (DLC bakeng sa molumo o phahameng) le ho nepahala (palo ea meno e phahameng bakeng sa ho khaola mokhabiso).
3. Bapisa le lisebelisoa: Netefatsa boholo ba arbor, ho lumellana ha RPM, le LEV system airflow (≥25 CFM / inch) ho netefatsa ts'ebetso e nepahetseng le taolo ea lerōle.
4. Ikamahanya le maemo a tlhahiso: Litšenyehelo tse leka-lekaneng le ho tšoarella (bolumo bo tlase: HSS; bophahamo bo phahameng: DLC) le ho fihlela litlhoko tse nepahetseng / tsa ho lumellana.
5. Ikamahanye le maemo: Beha pele li-blade tse sebetsang ka ntle (tse hanang ho bola) bakeng sa mosebetsi oa setšeng, 'me u sebelise li-blade tse tšesaane, tse tenyetsehang bakeng sa maqeba a kobehileng.

Ka ho latela moralo ona, bahlahisi, likonteraka le baetsi ba masela ba ka khetha li-saw blades tse sa faneng feela ka mokhoa o nepahetseng, oa boleng bo phahameng ba FCB empa hape li netefatsa ho latela litekanyetso tsa OSHA le ho sireletsa basebetsi ho tloha ho pepesehela lerōle la silika-qetellong ho finyella tekanyo ea ts'ebetso, ts'ireletso, le litšenyehelo.