DIN 30670-1bụ usoro extrusion nke okpukpu atọ nke na-emepụta polyethylene (3 LPE) mkpuchi n'elu longitudinally ma ọ bụ spirally welded naenweghị nkebi ígwè ọkpọkọiji chebe ha pụọ na corrosion.
A na-ejikarị ya na sistemu ọkpọkọ eliri ma ọ bụ n'ime mmiri maka ibufe mmiri mmiri ma ọ bụ gas.
Rịba ama: DIN 30670 kewara ụzọ abụọ na mbipụta 2024 kachasị ọhụrụ dabere na usoro mmepụta, ya bụ DIN 30670-1 na-ekpuchi sooks na ọnya extruded polyethylene coatings, na DIN 30670-2 na-ekpuchi sintered na ire ọkụ sprayed ụdị.
A na-ekewa ha n'ime ụdị abụọ dịka okpomọkụ nke imewe, nke bụụdị N na ụdị S.
| Ụdị | Okpomọkụ imewe (°C) |
| N | -20 ruo +60 |
| S | -40 ruo + 80 |
naISO 21809-1dabara na klaasị A na klaasị B, n'otu n'otu.
1st oyi akwa Epoxy resin oyi akwa, epoxy resin ntụ ntụ ga-eji.
2nd nrapado oyi akwa, nke nwere ike ịbụ ntụ ntụ ma ọ bụ extruded mkpuchi.
3rd oyi akwa Polyethylene, tube extrusion usoro, ma ọ bụ winding extrusion usoro.
Ọpụpụ tube:
N'ime usoro a, a na-ewepụ ihe polyethylene ozugbo n'ime ụdị tubular na-aga n'ihu, nke a na-agbanye na ọkpọkọ ígwè.
A na-ejikarị usoro a eme ihe maka obere ọkpọkọ dayameta ma hụ na ịdị n'otu na ịga n'ihu nke mkpuchi.
ikuku extrusion:
N'ime usoro a, a na-ewepụ polyethylene n'ụdị mpempe akwụkwọ wee merụọ ahụ n'elu ọkpọ ígwè.
Usoro a dabara adaba maka nnukwu dayameta ma ọ bụ nke na-abụghị ọkọlọtọ ma na-enye ohere maka mkpuchi na-agbanwe agbanwe na ọkpọkọ dị mgbagwoju anya ma ọ bụ nnukwu.
Dabere na mkpa dị mkpa nke ọrụ ahụ, enwere ike ịgbakwunye akwa nchekwa nchekwa igwe na 3LPE.
Ihe ndị a na-ejikarị eme ihe gụnyereihe(na-ezo aka na ISO 21809-5),plastic fiber na-eme ka iko, ma ọ bụ ngwa ngwa ciment(tụ aka na DN N 30340-1).
Iji hụ na ike nke ọma dị mma, ọ dị mkpa iji mebie ma ọ bụ kpalie elu nke polyethylene.
Ọgwụgwọ dị otú ahụ na-enyere aka ịbawanye nchikota n'etiti mkpuchi nchebe ọzọ na mkpuchi polyethylene.
Ọkpụrụkpụ Epoxy Resin Layer
Opekempe 80um.
Ngwunye oyi akwa
Opekempe 150um.
Mkpokọta Ọkpụrụkpụ mkpuchi
Dabere na dayameta ọnụ ọgụgụ nke ọkpọkọ ígwè, ọkpụrụkpụ nke oyi akwa nchebe corrosion ga-adị iche.
Maka mkpokọta ọkpụrụkpụ nke oyi akwa 3LPE, DIN 30670-1 na-ekewa klaasị atọ iji nagide ihe iwu ụlọ dị iche iche.n,v, na s.
Ọkwa n: Maka ọnọdụ nkịtị, ọkpụrụkpụ nke ọkwa n na-ezukarị.
Maka mkpuchi nke polyethylene, a na-eji ọkpụrụkpụ nke 1 mm mee ihe maka nchebe corrosion, ebe a na-eji ihe ndị fọdụrụnụ na-eme ka ikike ibu ọrụ nke oyi akwa nchebe dịkwuo elu.
Ọkwa v: Ọ bụrụ na ibu ígwè ọrụ na-abawanye (mbufe, nchekwa, ịtọgbọ, àgwà a kapịrị ọnụ, ihe ndị dị elu chọrọ), a ghaghị ịba ụba nke mkpuchi mkpuchi kacha nta site na 0.7 mm, ntụgharị v = n + 0.7 mm.
Ọkwa s: Special mkpuchi ọkpụrụkpụ elu karịa v nwekwara ike kwekọrịtara na izute mkpa nke a kpọmkwem oru ngo, na ndị dị otú ahụ ahaziri mkpuchi ọkpụrụkpụ na-labeled dị ka ọkwa s.
150mm ± 20mm, bevel n'akuku maka mkpuchi ọkpụrụkpụ kwesịrị ịbụ ihe karịrị 30 °.
A ga-ewepụ akwa epoxy na nrapado ma ọ dịkarịa ala 80 mm site na njedebe ọkpọkọ.A ga-ahapụ oyi akwa epoxy na-apụta site na njedebe ọkpọkọ nke polyethylene na-erughị 10 mm.
Iji chọpụta ogologo, tụọ site na mgbọrọgwụ elu nke ọkpọkọ ruo na mmalite nke njedebe diagonal nke oyi akwa nchebe corrosion.
Nkwarụ zuru oke
Obere ezughị okè na mmebi nke elu igwe anaghị erute.
Oghere dị n'elu oyi akwa nke PE;
Obere mpaghara nwere mkpuchi ezughị ezu;
Ntinye na ikuku ikuku na oyi akwa elu;
Adhesion nke mba ọzọ;
Abrasion elu;
Obere dents na mkpuchi.
A na-ekwe ka imezi obere mmerụ ndị a na enweghị oke na mpaghara enwere ike ịrụzi.
Nkwarụ siri ike
Ihe mkpuchi mkpuchi bụ ogologo n'elu ọkpọkọ ígwè.
Ebe ntụpọ onye ọ bụla a ga-arụzi agaghị agafe 10 cm².Ọnụ ọgụgụ nke ntụpọ a ga-edozi bụ ntụpọ 1 kwa mita 1 nke ogologo ọkpọkọ.Ma ọ bụghị ya, a ga-edekọ ọkpọkọ.
ISO 21809-1: Kpọmkwem maka mpụga atọ oyi akwa extruded polyethylene na polypropylene (3LPE na 3LPP) mkpuchi maka ígwè ọkpọkọ eji na nnyefe usoro na mmanụ na gas ụlọ ọrụ.
CSA Z245.21: Ezipụta mpụga polyethylene anticorrosion mkpuchi maka ígwè ọkpọkọ eji na ebuga usoro.
AWWA C215: Mpụga polyethylene mgbochi corrosion nke dị mma maka ọkpọkọ mmiri.Ọ bụ ezie na a na-ejikarị ya maka usoro mbufe mmiri, ọ nwere ọtụtụ ihe jikọrọ ya na DIN 30670 n'ihe gbasara ihe na teknụzụ ngwa.
Anyị na-atụ anya ka gị na gị na-arụkọ ọrụ iji nye ọkpọkọ ígwè kacha mma na ngwọta mkpuchi corrosion maka ọrụ gị.Biko nweere onwe gị ịkpọtụrụ anyị maka nkọwa ngwaahịa ndị ọzọ, anyị nwere obi ụtọ inyere gị aka ịchọta nhọrọ ọkpọkọ ígwè kacha mma maka mkpa gị!
