Makampani Ogulitsa Migodi

Kusanthula kwa Ntchito ya Maziko a Makampani ndi Ukadaulo wa Laser Cladding

1. Kusanthula Mbiri ya Makampani

1. Zotsatira za Malo Ogwirira Ntchito Ovuta pa Zipangizo

Malo osungiramo malasha pansi pa nthaka amakhala ndi zovuta kwambiri pa kulimba kwa makina. Popeza chinyezi nthawi zambiri chimapitirira 90% komanso kupezeka kwa mpweya wowononga monga H₂S ndi SO₂, zigawo zachitsulo zimakhudzidwa ndi dzimbiri lamagetsi mwachangu. Mwachitsanzo, masilinda a hydraulic prop, ofunikira kwambiri pakusunga bata la ngalande, amatha kukhala ndi dzimbiri pamwamba lomwe limasokoneza magwiridwe antchito otseka, zomwe zimapangitsa kuti makina a hydraulic alephere kugwira ntchito bwino. Kuphatikiza apo, tinthu ta fumbi la malasha (Mohs hardness 3-4) timagwira ntchito ngati zotupa, zomwe zimapangitsa kuti zida zotumizira monga ma sprockets ndi ma scrapers ziwonongeke kwambiri. Fumbi la malasha lothamanga kwambiri limatha kuchepetsa moyo wa ntchito ya zigawozi ndi 40% poyerekeza ndi malo oyera.

2. Njira Zolepheretsa Chigawo

(1) Kutopa Kwambiri: Kudzaza mozungulira pa ma sprockets ndi ma scrapers kumayambitsa ming'alu yaying'ono pamwamba. Pambuyo pa maola pafupifupi 1,000 ogwirira ntchito, ming'alu iyi imatha kulowa mkati mwa 0.5mm, zomwe zimapangitsa kuti zinthu zisawonongeke komanso kuti ntchito zisamayende bwino.

(2) Kuchotsa Zophimba: Magawo achikhalidwe okhala ndi ma electroplated (monga, hard chrome plating) amalumikizana mofooka ndi ma substrates (20-30 MPa), zomwe zimapangitsa kuti azitsekeka mosavuta akakhudzidwa. Mosiyana ndi zimenezi, laser cladding imapereka mphamvu zomangira za 400-600 MPa, zomwe zimaonetsetsa kuti zimamatirira kwa nthawi yayitali.

2. Ubwino wa Ukadaulo wa Laser Cladding

Kuphimba kwa Laser Kwakunja

Njira imeneyi imagwira ntchito bwino kwambiri pokonzekera zokutira zosatha komanso zosagwira dzimbiri pazigawo za shaft monga masilinda ndi ndodo za piston. Ubwino waukulu ndi monga:

● Kuchuluka Kochepa kwa Kusungunuka: Zochepera 5%, kusunga zinthu zoyambirira.

● Kusintha Kochepa: Madera omwe amakhudzidwa ndi kutentha nthawi zambiri amakhala

● Kugwiritsa Ntchito Zinthu Mwanzeru: Kugwiritsa ntchito ufa kumapitirira 90%, zomwe zimachepetsa ndalama poyerekeza ndi kugwiritsa ntchito pulasitiki wamba.

● Ubwino wa pamwamba: Kutha kwa Ra ≤ 6.3μm, zomwe zimapangitsa kuti pasakhale kufunika kokonza pambuyo pake nthawi zambiri.

Kuphimba kwa Laser kwa Khoma Lamkati

Njirayi ndi yabwino kwambiri pa masilinda a hydraulic ndi ndodo za piston, ndipo imalola kugwiritsa ntchito zokutira zosiyanasiyana za alloy (monga chitsulo chosapanga dzimbiri, alloys zochokera ku nickel) zokhala ndi makulidwe kuyambira 0.5mm mpaka 3mm. Mwachitsanzo:

● Zophimba Zosapanga Chitsulo: Zimapereka kukana dzimbiri kasanu kuposa chitsulo chopanda kanthu m'malo okhala ndi asidi.

● Ma Aloyi Ochokera ku Nikeli: Wonjezerani kuuma kwa 200 HV kufika pa 600 HV, zomwe zimapangitsa kuti kukana kukalamba kusamayende bwino.

Chophimba cha Laser Chopindika Pamwamba

Njirayi, yopangidwira ma geometries ovuta monga ma sprockets ndi ma picks, imapereka:

● Kuwongolera Njira Zosinthira: Amagwiritsa ntchito makina a CNC a 5-axis kuti akwaniritse makulidwe ofanana a chophimba (± 0.1mm) pamalo osakhazikika.

● Mphamvu Yaikulu Yogwirizana: Kugwirizana kwa zitsulo kumatsimikizira kukana kukhudzidwa ndi katundu wokhudzana ndi kugunda. Mwachitsanzo, zigawo zophimbidwa pa ma pick zimasunga umphumphu ngakhale pansi pa 200 J ya mphamvu yokhudzana ndi kugunda.

3. Magawo Aukadaulo ndi Ziyeso Zantchito

4. Phunziro la Nkhani: Kukonza Silinda Yothandizira Madzi a Hydraulic

Mgodi wa malasha ku Shanxi Province unanena kuti ndalama zosinthira masilinda zatsika ndi 65% pambuyo poti wagwiritsa ntchito laser cladding. Njirayi inabwezeretsa masilinda omwe anali ndi dzimbiri (poyamba anali φ140mm×2.5m) kuti akhale okonzeka kugwiritsidwa ntchito, ndipo gawo lokhala ndi clad (NiCrBSi alloy, makulidwe a 1.2mm) linawonetsa:

● 86% yotsika mtengo kuposa chitsulo choyambirira.

● Moyo wautali katatu kuposa nthawi yoyesedwa yovala movutikira.

● Kupambana 100% mu mayeso otsekereza mwamphamvu (35 MPa).

5. Ubwino wa Zachilengedwe ndi Zachuma

● Kusunga Zinthu Zamtengo Wapatali: Kuphimba ndi laser kumagwiritsa ntchito ufa wa alloy wochepa ndi 70% poyerekeza ndi njira zachikhalidwe zopangira pamwamba.

● Kugwiritsa Ntchito Mphamvu Moyenera: Amachepetsa kugwiritsa ntchito mphamvu ndi 40% panthawi yokonza.

● Kuchepetsa Utsi Wotuluka: Amachotsa mpweya wa chromium wochuluka womwe umabwera chifukwa cha electroplating, mogwirizana ndi malamulo okhwima okhudza chilengedwe.

Pomaliza, ukadaulo wa laser cladding umapereka njira yothetsera mavuto onse okhudzana ndi kuwonongeka kwa zigawo m'malo ovuta a migodi, zomwe zimapereka magwiridwe antchito abwino komanso kukhazikika poyerekeza ndi njira zachikhalidwe.

Kugwiritsa Ntchito Mlandu

Kuphimba kwa laser kwa sprocket

Kuphimba kwa laser mkati mwa dzenje la silinda

Kuphimba kwa laser ya cylinder yakunja