Bere a Ɛsɛ sɛ Wogyae Slings a Wɔma So: Akwankyerɛ a Wɔde Aniwa Hu a Ɛfa Ntwitwa, Abrasion, ne Nnuru a Ɛhyew Ho

BI wɔtwe afiri a  wɔde ma nneɛma so fi baabi a wɔde nneɛma gu no. Ɛte sɛ nea ɛyɛ fɛ —ɛnyɛ nea wɔatwitwa no pefee, ɛnyɛ nea asɛe a wotumi hu. Riging adwumayɛfo no de di dwuma de ma nneɛma so daa. Sling no di nkogu. Adesoa no so tew. Nhwehwɛmu no da nea ɛde bae adi: nneɛma a asɛe wɔ nipadua no mu a na wontumi nhu bere a wɔreyɛ nhwehwɛmu ansa na wɔde adi dwuma no.

Saa tebea yi di agoru wɔ adwumayɛbea ahorow ne adansi mmeae afe biara. Sɛnea nnwumakuw no nsɛm kyerɛ no, agyan a ɛyɛ huammɔdi ɔha biara mu nkyem kɛse ba wɔ agyan a na ɛte sɛ nea aniwa nkutoo betumi de adi dwuma mu  . Adwumayɛ mu Ahobammɔ ne Akwahosan Dwumadibea (OSHA)  si so dua sɛ ɛsɛ sɛ woyi agyan a asɛe fi adwumayɛ mu, nanso asɛmmisa titiriw no ne sɛ: wobɛyɛ dɛn ahu bere a nneɛma a asɛe no yɛ aniberesɛm araa ma ɛma agyan bi kɔ pɛnhyen?

 

Lishenflex  ayɛ afiri a wɔde ma nneɛma so bɛboro mfe aduonu, na yɛn afuw mu nsɛm kyerɛ sɛ riggers pii di apere sɛ wobehu nsonsonoe a ɛda ahosiesie a wɔsɛe no ne ɔsɛe a ɛde ahobammɔ to asiane mu ntam. Saa akwankyerɛ yi de aniwa so nkyerɛkyerɛmu a ɛfa ɔsɛeɛ ahodoɔ a ɛtaa ba ne pɛnhyenkɔ gyinapɛn pɔtee a ASME B30.9 ne OSHA mmara akyerɛkyerɛ mu ma.

 

Ntwitwa ne Nusu

Ntwitwiridii ne tetew ka nneɛma a wɔsɛe no kɛse na ɛda adi pefee no ho. Nanso, ɛnyɛ ntwitwiridii nyinaa na ɛhwehwɛ sɛ wogyae adwuma ntɛm ara—nea emu dɔ, beae a ɛwɔ, ne sɛnea emu yɛ den no na ɛkyerɛ sɛ ebia ɛsɛ sɛ wɔtow agyan no gu anaa.

 

Pɛnhyenkɔ Ho Nhwehwɛmu a Wɔde Twa Nneɛma So

 

Sɛnea ASME B30.9 kyerɛ no , ɛsɛ sɛ woyi sling bi fi adwuma mu bere a:

 

• Ntwitwiridii, ntetewmu, anaa nhama a ɛda nhama a ɛwɔ mu no da adi —sɛ akyi fã a ɛbɔ ho ban no sɛe pɛ a, nhama a ɛsoa adesoa no yɛ mmerɛw

• Ntokuru anaa nusu a ɛwɔ webbing no mu a ɛhyɛn mu fa ne kɛse nyinaa mu

• Twitwa biara a ɛtew webbing no trɛw so kɛse

 

Sɛnea OSHA’s Guidance on Safe Sling Use kyerɛ no,  wɔakyerɛw ntokuru, nusu, ntwitwiridii, abrasive wear, anaa snags ka tebea horow a ɛhwehwɛ sɛ woyi fi adwuma mu ntɛm ara no ho . Canada Asoɛe a Ɛhwɛ Adwuma mu Akwahosan ne Ahobammɔ So (CCOHS) de ka ho sɛ ntwitwiridii, tetew, nhama, anaa ntokuru a ɛwɔ afiri no nipadua mu no yɛ sɛnkyerɛnne a wotumi hu a ɛkyerɛ sɛ nneɛma asɛe a ɛsɛ sɛ woyi fi hɔ.

 

Nneɛma a wɔde hu a wɔde aniwa hu:

 

• Nhama nketenkete a wɔatwa wɔ soro —nhama a ɛwɔ soro nkutoo na ɛka; ebia wobetumi agye atom sɛ core biara da adi a

• Deep cut —ɛfa ply layers pii mu anaasɛ ɛda core fibers adi

• Edge cut —twitwa a ɛtew webbing no trɛw a etu mpɔn wɔ anoano no so

 

Nsɛm a ɛho hia:  Sɛ wotwa anoano 10% mpo a, ebetumi atew sling tumi so 35% . Eyi nti na ASME B30.9 hwehwɛ sɛ woyi fi hɔ bere a nea wɔatwa biara no sɛe sling no trɛw anaa ne nhyehyɛe kɛse no.

 

Abrasion ne Wear na ɛyɛ

Abrasion ba bere a wɔtwe slings fa mmeae a ɛso yɛ toro, twe fa mmeae a ɛyɛ teateaa, anaasɛ wɔde di dwuma a enni ntwea so ahobammɔ wɔ nnesoa a ano yɛ nnam so no. Nea ɛnte sɛ nea wɔatwitwa no, mpɛn pii no, akisikuru no yɛ nkakrankakra na wobetumi abu ani agu so.

 

Pɛnhyenkɔ Ho Nhwehwɛmu a Ɛfa Abrasion Ho

 

Per ASME B30.9 , ɛsɛ sɛ woyi sling bi fi adwuma mu bere a:

 

• Abrasive wear a ɛboro so wɔ hɔ —nwene a ɛma core yarns da adi anaasɛ ɛtew sling no cross-section so kɛse

• Surface abrasion asɛe afa akyi webbing no mu akɔ adesoa-soa no mu

• Wear concentrated wɔ beae biako —localized abrasion yɛ asiane kɛse sen uniform surface wear

 

EN 1492-1  kyerɛ sɛ ɛsɛ sɛ woyi nhama a ɛyɛ tratraa a wɔde hyɛ nhama mu no fi hɔ bere a abrasive wear asɛe webbing no akodu baabi a mfitiase ntrɛwmu no so atew anaasɛ nhama no abubu no.

 

Nneɛma a wɔde hu a wɔde aniwa hu:

 

• Hann surface fuzzing —ɛyɛ nea ɛtaa ba esiane sɛ wɔde di dwuma nti; a wogye tom

• N’ano a abubu —ebia ɛbɛyɛ nea wogye tom sɛ ɛyɛ nketenkete a, nanso hwɛ mu daa

• Mmeae a asɛe —a ɛda emu nhama anaa nhama a ɛwɔ mu no da adi; ɛsɛ sɛ wɔkɔ pɛnhyen

• Nhama a wɔde powder ayɛ wɔ nhama ntam —kyerɛ sɛ wɔabɔ no akɔ akyiri

 

Lishenflex ’s lab data kyerɛ sɛ slings a wɔde di dwuma a enni corner protectors betumi ahwere wɔn ahoɔden bɛyɛ 50% wɔ lift biako mu esiane concentrated abrasion wɔ contact point no nti. Ntwea so ahobammɔ nyɛ nea obiara betumi apaw —ɛho hia na ama sling atra ase akyɛ.

 

Nnuru a Ɛhyew ne Nea Ɛsɛe

Nnuru a ɛsɛe ade betumi ayɛ nneɛma a ɛyɛ hu sen biara a ɛma agyan no sɛe no mu biako efisɛ mpɛn pii no wontumi nhu na ebetumi aka agyan no ntwemu nyinaa bere koro mu.

 

Nnuru a Wɔsɛe no Ho Nhwehwɛmu a Wɔde Hwɛ Pɛnhyen

 

Sɛnea CCOHS kyerɛ no, acid sɛe nylon slings, bere a alkali sɛe polyester slings . Sɛ nnuru sɛe ade a, nhama no nhyehyɛe no sɛe, na mpɛn pii no, ɛnyɛ nea wotumi hu wɔ soro.

 

Per ASME B30.9 , ɛsɛ sɛ woyi sling bi fi adwuma mu bere a:

 

• Acid anaa caustic ɔhyew a ɛwɔ hɔ

• Kɔla a ɛsakra a ɛkyerɛ sɛ wɔde nnuru ahyɛ mu

• Mmeae a ɛyɛ mmerɛw anaasɛ ɛyɛ den a ɛkyerɛ sɛ nhama asɛe

 

Liftex Slings ahobammɔ akwankyerɛ no bɔ kɔkɔ sɛ sɛ wɔde acid anaa nnuru a ɛma ɛyɛ hyew hyɛ sling bi mu na nhama no sɛe a, sling no yɛ den na ɛyɛ mmerɛw, na ɛma ne kɔla sesa bruu anaa tuntum . Ɛsɛ sɛ woyi saa nhama yi fi adwuma mu ntɛm ara.

 

Nneɛma a wɔde hu a wɔde aniwa hu:

• Stiff or brittle feel —nnuru a wɔsɛe no ma nhama no yɛ den

• Kɔla a ɛsakra (kɔla a ɛyɛ bruu, tuntum, anaa nea ɛyɛ soronko) —ɛtaa yɛ nsensanee anaasɛ ɛwɔ mmeae a ɛda adi

• Nneɛma a ɛwɔ soro a ɛrepaapae anaasɛ ɛrepaapae —kyerɛ sɛ asɛe akɔ akyiri

• Nneɛma a ɛyɛ den a wontumi nkyerɛkyerɛ mu wɔ mmeae a ɛnyɛ nea ɛho ntew

Ɔhyew a Ɛsɛe ne Weld Splatter

Ɔhyew a ɛsɛe ade no yɛ hu titiriw efisɛ ebetumi ama afiri no ayɛ mmerɛw a ɛnsakra biribiara a wotumi hu wɔ ne soro kosi sɛ nhama no bɛyɛ mmerɛw.

 

Pɛnhyen Ho Nhwehwɛmu a Ɛfa Ɔhyew a Ɛsɛe Nneɛma Ho

 

Sɛnea ASME B30.9 ne OSHA kyerɛ no, ɛsɛ sɛ woyi sling bi fi adwuma mu bere a:

 

• Adanse a ɛkyerɛ sɛ ɔhyew asɛe —ɛyɛ nwene, ɛyɛ hyew, anaasɛ ɛyɛ akisikuru

• Weld splatter a ayɛ fused to webbing no

• Mmeae a ɛyɛ mmerɛw anaasɛ ɛyɛ den a ɛkyerɛ sɛ ɔhyew asɛe

 

CCOHS ka sɛ ɔhyew a ɛboro 90°C (194°F) ma polyester ne nylon ne nea ɛboro 80°C (176°F) ma polypropylene betumi asɛe ade daa . OSHA kyerɛw melting, charring, anaa weld splatter wɔ sling no fã biara so pɔtee sɛ tebea a ɛsɛ sɛ woyi fi adwuma mu ntɛm ara.

 

Nneɛma a wɔde hu a wɔde aniwa hu:

 

• Nhama a ayow anaasɛ afrafra —ɛte sɛ nea sling no ani ayɛ glazed anaasɛ ayɛ nwini

• Charring anaa blackening —efi ogyaframa anaa weld splatter tẽẽ mu

• Blistering —ahurututu anaa ahurututu a ɛwɔ sling no ani

• Sɛ ɛyɛ den a ɛnyɛ hyew —ɔhyew a ɛba fam sen sɛnea ɛbɛbɔ no da so ara betumi ama asɛe

 

UV Ɔsɛe ne Fading

Mpɛn pii no, kɔla a ɛreyera ne ade a edi kan a wotumi hu a ɛkyerɛ sɛ UV asɛe —na ɛyɛ sɛnkyerɛnne a ɛkyerɛ sɛ ebia agyan no ahwere ahoɔden kɛse dedaw.

Pɛnhyenkɔ Ahyɛnsode a Ɛfa UV a Wɔsɛe no Ho

 

Per ASME B30.9 ne WAC 296-155-55825 , ɛsɛ sɛ woyi sling bi fi adwuma mu bere a:

 

• Kɔla a ayɛ fitaa anaasɛ ayera wɔ hɔ

• Nkɔanim stiffness a sling ade no

• Surface abrasion wɔ mmeae a ɛnyɛ nea ɛtaa ne adesoa no nhyia

• Mmeae a ɛyɛ mmerɛw anaasɛ ɛyɛ den a ɛkyerɛ sɛ nhama asɛe

 

Rigging Asoɛe no bɔ kɔkɔ sɛ agyan kurukuruwa a wɔde jacket a ɛyɛ kɔla yɛ hare ahyɛ mu no betumi ahwere wɔn ahoɔden a etwa to no ɔha biara mu nkyem 40 wɔ asram asia bere a wɔde UV kɔ so hyɛ mu no mu . Sɛnea Liftex akwankyerɛ no kyerɛ no, UV a ɛsɛe ade no betumi aka synthetic webbing ahoɔden wɔ ɔkwan soronko so fi kakraa bi kosi nea ɛsɛe koraa.

 

Nneɛma a wɔde hu a wɔde aniwa hu:

 

• Kɔla a ayera —akuturuku no ayera ne mfitiase kɔla (ɛtaa da adi sɛ ɛyɛ fitaa anaa fitaa) .

• Stiff or brittle feel —nhama a UV asɛe no no yɛ den

• Surface cracking anaa checking —mpaapaemu fɛfɛ a ɛwɔ sling no ani

 

Stitching ne Splice a Wɔsɛe no

Stitching ne ade a ɛhaw adwene kɛse wɔ sling mu. Nnuru a wɔde kyekyere adesoa ne aniwa no soa adesoa no nyinaa, na mpɛn pii no, nwene a wɔpam no ne ade a edi kan a ɛkyerɛ sɛ ɛredi nkogu ntɛm ara.

 

Pɛnhyenkɔ Ho Nhwehwɛmu a Ɛfa Stitching Damage ho

 

Per ASME B30.9 , ɛsɛ sɛ woyi sling bi fi adwuma mu bere a:

 

• Npam a abubu anaasɛ asɛe wɔ adesoa-soa nhama mu

• Stitching pull-out —stitching no retew ne ho afi webbing no ho

• Mpaapaemu anaasɛ ɛho asɛe kɛse wɔ nhama a ɛsoa adesoa no so

 

EN 1492-1 kyerɛ sɛ ɛsɛ sɛ wɔde ani hwɛ nhama a wɔapam no mu sɛ ebia asɛe na ɛnsɛ sɛ nhama a abubu wɔ mmeae a wɔde adesoa soa no.

 

Nneɛma a wɔde hu a wɔde aniwa hu:

 

• Nhama a abubu —asaawa biako anaa nea ɛboro saa a abubu wɔ aniwa no anaa baabi a wɔde nhama abɔ no

• Worn stitching —stitching no ayɛ abraded na ɛte sɛ nea ɛyɛ tratraa anaasɛ asɛe

• Stitching pull-out —stitching no retew ne ho afi sling nipadua no ho

• Npam a ɛnteɛ anaasɛ wɔakyinkyim no —ebetumi akyerɛ sɛ wɔde nneɛma boro so anaasɛ wɔanyɛ no yiye

 

Nsɛm a Wɔaboaboa Ano ne Nyansahyɛ a Mfaso

Hu a wubehu bere a ɛsɛ sɛ wogyae afiri a wɔde ma nneɛma so no ho hia na ama wɔanya ahobammɔ wɔ adwumam. Nnyinasosɛm titiriw no: sɛ w’adwene mu yɛ wo naa a, twa fi hɔ.

 

Nhwehwɛmu kratasin a wɔde hwehwɛ pɛnhyen ntɛm ara:

 

Nneyɛe a mfaso wɔ so a ɛsɛ sɛ wɔde di dwuma:

 

1. Yɛ nhwehwɛmu ansa na wode adi dwuma —ansa na wobɛma wo ho so biara no, hwɛ sɛ asɛe a wotumi hu anaa

2. Nkyerɛwee nhwehwɛmu a wɔahu—kora kyerɛwtohɔ so sɛnea ASME B30.9 ahwehwɛde ahorow te

3. Yi slings a asɛe ntɛm ara—n 'sie' sling da na woatow agu akyiri yi

4. Sɛe slings a wɔakɔ pɛnhyen—twitwa anaa ɛsɛe no na amma wɔansan mfa nni dwuma bio wɔ akwanhyia mu

5. Tete wo kuw no —hwɛ hu sɛ riggers nyinaa betumi ahu nneɛma ahorow a wɔsɛe no ne nneɛma a wɔde kɔ pɛnhyen

 

Lishenflex  yɛ polyester lifting slings a ɛne EN 1492-1 ne ASME B30.9 gyinapɛn ahorow hyia, a ɛwɔ kɔla-coded tumi agyiraehyɛde a emu da hɔ ne nhwehwɛmu ntetee mmoa. Yɛsi so dua sɛ nhwehwɛmu a wɔyɛ no daa ne pɛnhyenkɔ a wɔkɔ bere ano ne ahobammɔ a wɔde ma nneɛma so no fapem.

 

Sɛ wuhia mmoa a wode besi sling nhwehwɛmu ne pɛnhyen nhyehyɛe —anaasɛ wuhia mmoa a wode behu nneɛma ahorow a asɛe wɔ wo mprempren nneɛma a woakora so no mu —yɛsrɛ wo fa email kɔma sales@lishenflex.com , na yɛn mfiridwuma kuw no de mmoa bɛma mmiako mmiako.