SDY160 ARIKO FUSION WELING MACHINE YAKORESHEJWE
Ibisobanuro bidasanzwe
Mbere yo gukoresha imashini, umuntu wese agomba gusoma ibi bisobanuro yitonze kandi akabigumana neza kugirango yizere ibikoresho numutekano wumukoresha, ndetse numutekano wabandi.
2.1 Imashini ikoreshwa mu gusudira imiyoboro ikozwe muri PE, PP, PVDF kandi ntishobora gukoreshwa mu gusudira ibikoresho idasobanuwe, bitabaye ibyo imashini irashobora kwangirika cyangwa impanuka zimwe zishobora kuvamo.
2.2 Ntukoreshe imashini ahantu hashobora guturika
2.3 Imashini igomba gukoreshwa nabakozi bashinzwe, babishoboye kandi bahuguwe.
2.4 Imashini igomba gukorerwa ahantu humye.Ingamba zo gukingira zigomba gufatwa mugihe zikoreshwa mumvura cyangwa kubutaka butose.
2.5 Imashini ikoreshwa na 220V ± 10%, 50 Hz.Niba insinga yagutse igomba gukoreshwa, igomba kugira igice cyayobora gihagije ukurikije uburebure bwayo.
2.6 Mbere yo gukoresha imashini, uzuza 46 # amavuta ya hydraulic.Menya neza ko amavuta ya hydraulic ahagije kugirango akore;urwego rwa peteroli rugomba kuba 2/3 bya tank.Simbuza igitoro cyamavuta yicyuma ukoresheje umutuku utukura wumuyaga wa pulasitike cyangwa igitutu ntigishobora kwihagararaho.
Umutekano
3.1 Witondere mugihe ukora no gutwara imashini ukurikije amategeko yumutekano yose muri aya mabwiriza.
3.1.1 Menyesha mugihe ukoresha
l Umukoresha agomba kuba ashinzwe kandi yahuguwe.
Kugenzura neza no kubungabunga imashini buri mwaka kugirango umutekano hamwe nimashini byizewe.
Urubuga rwakazi rwanduye kandi rwuzuye ntirwagabanya gusa imikorere yakazi, ahubwo rutera impanuka byoroshye, kubwibyo rero ni ngombwa guhorana isuku yakazi kandi ntayindi mbogamizi.
3.1.2 Imbaraga
Agasanduku ko gukwirakwiza amashanyarazi kagomba kugira ikibazo cyubutaka hamwe nubuziranenge bwumutekano w'amashanyarazi.Ibikoresho byose birinda umutekano byerekanwa namagambo cyangwa ibimenyetso byoroshye kumvikana.
Ubutaka: Urubuga rwose rugomba gusangira umugozi umwe kandi sisitemu yo guhuza ubutaka igomba kuzuzwa no kugeragezwa nabantu babigize umwuga.
3.1.3 Guhuza imashini nimbaraga
Imashini ihuza imashini nimbaraga igomba kuba imashini ihungabana hamwe nibimenyetso bya ruswa.Niba insinga yagutse ikoreshwa, igomba kuba ifite igice kinini cyo kuyobora ukurikije uburebure bwayo.
3.1.4 Kubika ibikoresho byamashanyarazi
Kuri min.akaga, ibikoresho byose bigomba gukoreshwa no kubikwa neza kuburyo bukurikira:
Irinde gukoresha insinga z'agateganyo zidakurikiza ibisanzwe
※ Ntukore ku bice bya electrophorus
Kubuza gukuramo umugozi kugirango uhagarike
Kubuza gutwara insinga zo guterura ibikoresho
※ Ntugashyire ikintu kiremereye cyangwa gityaye ku nsinga, kandi ugenzure ubushyuhe bwa kabili mu kugabanya ubushyuhe (70 ℃)
Not Ntukore ahantu hatose.Reba niba inkweto n'inkweto byumye.
※ Ntugasenye imashini
3.1.5 Reba imiterere yimashini yimashini buri gihe
※ Reba insulasiyo yinsinga byumwihariko ingingo zasohotse
※ Ntugakoreshe imashini mubihe bikabije.
※ Reba niba switch yamenetse ikora neza byibura buri cyumweru.
※ Reba ubutaka bwimashini nabakozi babishoboye
3.1.6 Sukura kandi urebe neza imashini
※ Ntugakoreshe ibikoresho (nka abrasive, nibindi byuma) byangiza insulation byoroshye mugihe cyoza imashini.
. Menya neza ko imbaraga zaciwe mugihe urangije akazi.
※ Menya neza ko nta byangiritse muri mashini mbere yo kuyikoresha.
Niba gusa ibikurikira byavuzwe haruguru, kwirinda birashobora gukora neza.
3.1.7 Gutangira
Menya neza ko switch ya mashini ifunze mbere yo kuyifungura.
3.1.8 Umuntu utamenyerejwe ntabwo yemerewe gukoresha imashini igihe icyo aricyo cyose.
3.2.Ingaruka zikomeye
3.3.1 Imashini ya Butt fusion igenzurwa na hydraulic unit:
Iyi mashini ikoreshwa gusa numuntu wabigize umwuga cyangwa abandi bafite icyemezo cyo gukora, ubundi impanuka udashaka wenda yatewe.
3.3.2 Isahani yo gushyushya
Ubushyuhe ntarengwa bushobora kugera kuri 270 ℃, bityo ibintu bikurikira bigomba kwitabwaho:
------ Wambare uturindantoki twumutekano
------- Ntukigere ukora ku isahani yo gushyushya
3.3.3 Igikoresho cyo gutegura
Mbere yo kogosha imiyoboro, impera z'imiyoboro zigomba gusukurwa, cyane cyane koza umucanga cyangwa izindi draff zometse kumpera.Mugukora ibi, ubuzima bwurugero burashobora kuramba, kandi bikarinda no kogosha bajugunywa kubantu babi.
3.3.4 Ikadiri shingiro:
Menya neza ko imiyoboro cyangwa ibikoresho byakosowe neza kugirango ubone guhuza neza.Mugihe uhuza imiyoboro, uyikoresha agomba kubika umwanya runaka kumashini kugirango umutekano wabakozi.
Mbere yo gutwara, menya neza ko clamp zose zimeze neza kandi ntizishobora kugwa mugihe cyo gutwara.
Kurikiza ibimenyetso byose byumutekano muri mashini.
Ikoreshwa ryurwego na tekinike ya tekinike
Andika | SDY160 |
Ibikoresho | PE , PP , PVDF |
Icyiza.urwego rwa diameter | Mm 160 |
Ibidukikije. | -5 ~ 45 ℃ |
Amashanyarazi | ~ 220V ± 10 % |
Inshuro | 50 Hz |
Ibiriho byose | 15.7 A. |
Imbaraga zose | 2.75 kWt |
Shyiramo plate Isahani yo gushyushya | 1 kW |
Gutegura moteri | 1 kW |
Moteri ya Hydraulic | 0,75 kWt |
Kurwanya dielectric | > 1MΩ |
Icyiza.Umuvuduko | 6 MPa |
Igice cyose cya silinderi | 4.31cm2 |
Umubare w'agasanduku k'amavuta | 3L |
Amavuta ya Hydraulic | 40 ~ 50 (kinematic viscosity) mm2/ s, 40 ℃) |
Ijwi ritifuzwa | 80 ~ 85 dB |
Icyiza.Ubushyuhe bw'isahani | 270 ℃ |
Itandukaniro mubushuhe bwubuso bwa plaque | ± 5 ℃ |
Ibisobanuro
Imashini igizwe nibintu byibanze, hydraulic unit, plaque yo gushyushya, igikoresho cyo gutegura ninkunga.
5.1 Ikadiri
5.2 Igikoresho cyo gutegura no gushyushya isahani
5.3 Igice cya Hydraulic
Amabwiriza yo Gukoresha
6.1 Ibikoresho byose bigomba gushyirwa mu ndege ihamye kandi yumye kugirango ikore.
6.2 Mbere yo gukora menya neza ibintu bikurikira:
u Imashini imeze neza
u Imbaraga zujuje ibisabwa ukurikije imashini ya butt fusion
u Umurongo w'amashanyarazi ntucika cyangwa ngo wambare
u Ibikoresho byose nibisanzwe
u Icyuma cyibikoresho byo gutegura kirakaze
u Ibice byose bikenewe nibikoresho birahari
6.3 Guhuza no gutegura
6.3.1 Huza ikadiri yibanze na hydraulic unit hamwe na coupler yihuse.
6.3.2 Huza umurongo wa plaque ushyushya agasanduku k'amashanyarazi muri hydraulic unit.
6.3.3 Huza umurongo wo gushyushya isahani.
6.3.4 Shyiramo ibyinjijwe bikwiye kugirango ukore ukurikije diameter yo hanze yimiyoboro / fitingi.
6.3.5 Ukurikije ibisabwa muburyo bwo guhuza no gusudira, shyira ubushyuhe mugenzuzi wubushyuhe hanyuma ushireho igihe mugihe.(Reba igice cya 7 iki gitabo).
6.4 Intambwe zo gusudira
6.4.1 Imiyoboro
Mbere yo gusudira, ubanza, reba niba ibikoresho hamwe nigipimo cyumuvuduko aricyo gisabwa.Ubwa kabiri reba niba hari ibishushanyo cyangwa ibice hejuru yimiyoboro / fitingi.Niba ubujyakuzimu bwibishushanyo cyangwa ibice birenze 10% byubugari bwurukuta, gabanya igice cyibishushanyo cyangwa ibice.Sukura hejuru yumuyoboro hamwe nigitambaro gisukuye kugirango impera zumuyoboro zisukure.
6.4.2
Shira imiyoboro / fitingi winjizamo ikadiri hanyuma ukomeze impera kugirango isudwe ibe uburebure bumwe (nta ngaruka zo gutegura no gushyushya umuyoboro).Umuyoboro uva kumurongo wibanze ugomba gushyigikirwa kumurongo umwe wo hagati wa clamps.Komeza imigozi ya clamps kugirango ukosore imiyoboro / ibikoresho.
6.4.3 Hindura igitutu
Fungura byimazeyo igitutu cyo kugenzura igitutu burundu, funga neza kugenzura kugenzura hanyuma hanyuma utere imbere icyerekezo cyerekezo hagati aho uhindure icyerekezo cyumuvuduko kugeza igihe silinderi itangiye kugenda, kuri ubu igitutu muri sisitemu nigitutu cyo gukurura.
Fungura igitutu cyumuvuduko wuzuye, funga neza kugenzura kugenzura hanyuma hanyuma utere imbere icyerekezo cyerekezo hagati aho uhindure icyerekezo cyumuvuduko kugirango ushireho umuvuduko wa sisitemu uhwanye no gukurura umuvuduko wongereho igitutu.
6.4.4 Gutegura
Fungura imiyoboro / fitingi irangira nyuma yo guhindura swing cheque valve irwanya amasaha kugeza kumpera.Shira igikoresho cyo gutegura hagati yimiyoboro / fitingi irangire hanyuma uyifungure, funga imiyoboro / fitingi irangira ukoresheje icyerekezo cyerekezo hagati aho uhindukirira buhoro buhoro kugenzura cheque ya valve isaha kugeza igihe habaye shavisiyo ikomeza kugaragara kumpande zombi.Hindura swing valve irwanya isaha kugirango ugabanye umuvuduko, mumwanya muto nyuma fungura ikadiri, uzimye igikoresho cyo gutegura hanyuma ukureho.
Funga imiyoboro / impera ikwiranye no kugenzura guhuza kwayo.Kudahuza ntarengwa ntigomba kurenga 10% yubugari bwurukuta, kandi birashobora kunozwa muguhambura cyangwa gukomera imigozi ya clamps.Ikinyuranyo kiri hagati yimiyoboro ibiri ntigomba kurenga 10% yubugari bwurukuta;bitabaye ibyo imiyoboro / fitingi igomba kongera gutegurwa.
Icyitonderwa: Ubunini bwa shavings bugomba kuba muri 0.2 ~ 0.5 mm kandi burashobora guhinduka muguhindura uburebure bwibikoresho byateguwe.
6.4.5
Kuraho umukungugu cyangwa ucagagurike hejuru yisahani yo gushyushya (Icyitonderwa: Ntukonone igipande cya PTFE hejuru yicyapa gishyushya.), Kandi urebe neza ko ubushyuhe bwageze kubisabwa.
Shira isahani yo gushyushya hagati yumuyoboro urangiye nyuma yubushyuhe bukenewe.Funga imiyoboro / fitingi irangirana no gukora icyerekezo cya valve hanyuma uzamure umuvuduko kumuvuduko wihariye ukoresheje swingi ya progaramu yo kugenzura umuvuduko kugeza isaro igeze murwego rwo hejuru.
Hindura swing cheque valve irwanya isaha kugirango ugabanye umuvuduko (nturenze gukurura umuvuduko) hanyuma uhindure swing check valve mubyerekezo byisaha kugeza kumpera.
Kanda buto “T.2”, Igihe cyo gushiramo gitangira kubara kandi igihe kizabarwa kugeza kuri zeru ku isegonda, noneho buzzer izavuga (reba igice cya 7)
6.4.6 Kwinjira no gukonja
Fungura ikadiri hanyuma usohokemo isahani yo gushyushya hanyuma ufunge imitwe ibiri yo gushonga vuba bishoboka.
Komeza umurongo werekezo ya valve kumwanya wegereye muminota 2 ~ 3, shyira umurongo wicyerekezo cya valve kumwanya wo hagati hanyuma ukande buto (“T5”) kugirango ubare igihe cyo gukonja kugeza kirangiye.Kuri iyi ngingo, imashini izongera gutanga impuruza.Kuraho igitutu, fungura umugozi wa clamp hanyuma ukuremo imiyoboro ihuriweho.
Kugenzura Ibihe na Ubushyuhe
Niba kimwe mu bipimo cyahinduwe, nka diameter yo hanze, SDR cyangwa ibikoresho by'imiyoboro, igihe cyo gushiramo nigihe cyo gukonjesha bigomba gusubirwamo ukurikije igipimo cyo gusudira.
7.1 Kugena igihe
7.2 Amabwiriza yo gukoresha
7.3 Igenamiterere ry'ubushyuhe
1) Kanda "SET" mumasegonda irenga 3 kugeza "sd" yerekanwe mumadirishya yo hejuru
2) Kanda "∧" cyangwa "∨" kugirango uhindure agaciro kugenwe (kanda "∧" cyangwa "∨" ubudahwema, agaciro kazongeraho cyangwa gukuramo mu buryo bwikora)
3) Nyuma yo gushiraho, kanda "SET" kugirango usubire kugenzura no kugenzura interineti
Reba kuri Welding Standard (DVS2207-1-1995)
8.1 Kubera itandukaniro muburyo bwo gusudira hamwe nibikoresho bya PE, igihe nigitutu biratandukanye mubice bitandukanye byo gusudira.Irerekana ko ibipimo nyabyo byo gusudira bigomba gutangwa nabakora imiyoboro hamwe n’ibikoresho.
8.2 Urebye ubushyuhe bwo gusudira bwimiyoboro ikozwe muri PE 、 PP na PVDF na DVS isanzwe iri hagati ya 180 ℃ kugeza 270 ℃.Ubushyuhe bwo gukoresha ubushyuhe buri muri 180 ~ 230 and, hamwe na max.ubushyuhe bwo hejuru bushobora kugera kuri 270 ℃.
8.3 Reba ibipimo bisanzwe DVS2207-1-1995
Ubunini bw'urukuta (Mm) | Uburebure bw'amasaro (mm) | Igitutu cyo kubaka amashanyarazi (MPa) | Umwanya t2(Sec) | Umuvuduko ukabije (MPa) | Guhindura-igihe t3(Sec) | Umuvuduko wo kubaka -igihe t4(Sec) | Umuvuduko wo gusudira (MPa) | Igihe cyo gukonja t5(Min) |
0 ~ 4.5 | 0.5 | 0.15 | 45 | ≤0.02 | 5 | 5 | 0.15 ± 0.01 | 6 |
4.5 ~ 7 | 1.0 | 0.15 | 45 ~ 70 | ≤0.02 | 5 ~ 6 | 5 ~ 6 | 0.15 ± 0.01 | 6 ~ 10 |
7 ~ 12 | 1.5 | 0.15 | 70 ~ 120 | ≤0.02 | 6 ~ 8 | 6 ~ 8 | 0.15 ± 0.01 | 10 ~ 16 |
12 ~ 19 | 2.0 | 0.15 | 120 ~ 190 | ≤0.02 | 8 ~ 10 | 8 ~ 11 | 0.15 ± 0.01 | 16 ~ 24 |
19 ~ 26 | 2.5 | 0.15 | 190 ~ 260 | ≤0.02 | 10 ~ 12 | 11 ~ 14 | 0.15 ± 0.01 | 24 ~ 32 |
26 ~ 37 | 3.0 | 0.15 | 260 ~ 370 | ≤0.02 | 12 ~ 16 | 14 ~ 19 | 0.15 ± 0.01 | 32 ~ 45 |
37 ~ 50 | 3.5 | 0.15 | 370 ~ 500 | ≤0.02 | 16 ~ 20 | 19 ~ 25 | 0.15 ± 0.01 | 45 ~ 60 |
50 ~ 70 | 4.0 | 0.15 | 500 ~ 700 | ≤0.02 | 20 ~ 25 | 25 ~ 35 | 0.15 ± 0.01 | 60 ~ 80 |
Icyitonderwa pressure Umuvuduko wubwubatsi bwumuvuduko nigitutu cyo gusudira muburyo nigisabwa cyumuvuduko wimbere, umuvuduko wikigereranyo ugomba kubarwa hamwe na formula ikurikira.
Imvugo:
Imikorere mibi Isesengura nigisubizo
9.2 Igihe cyo gufata neza no kugenzura
9.2.1 Kubungabunga
Ating Gushyushya isahani
Nyamuneka nyamuneka witondere gufata icyapa.Gumana intera runaka kure yisahani.Isuku yubuso bwayo igomba gukorwa nubuso bushyushye ukoresheje umwenda woroshye cyangwa impapuro, irinde ibikoresho byangiza bishobora kwangiza igifuniko.
Mugihe gisanzwe reba ibi bikurikira
1) Sukura hejuru ukoresheje ibikoresho byihuta byuka (alcool)
2)Creba gukomera kwinsinga hamwe na kabili hamwe nuburyo bwo gucomeka
3) Kugenzura ubushyuhe bwacyo ukoresheje scanning ya infragre-ray
Tool Igikoresho cyo gutegura
Birasabwa cyane guhora usukuye ibyuma no koza pulle ukoresheje icyuma.Mubihe bisanzwe, kora igikorwa cyuzuye cyo gukora isuku.
lHydraulic
Komeza ku buryo bukurikira
nCreba buri gihe urwego rwa peteroli
nReplace rwose amavuta buri mezi 6
3)Komeza isuku ya peteroli hamwe namavuta
9.2.2 Kubungabunga & Kugenzura
Igenzura risanzwe
Ingingo | Ibisobanuro | Kugenzura mbere yo gukoresha | Ubwa mbere ukwezi | Buri mezi 6 | Buri umwaka |
Igikoresho cyo gutegura | Gusya cyangwa gusimbuza icyuma Simbuza umugozi niba wacitse Ongera uhuze imashini |
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Isahani | Yongeye guhuza umugozi na sock Sukura hejuru yubushyuhe, ongera usubiremo PTFE nibiba ngombwa Ongera uhuze imashini | ● ●
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Ubushuhe.sisitemu yo kugenzura | Kugenzura ibipimo by'ubushyuhe Simbuza umugozi niba wacitse |
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Sisitemu ya Hydraulic | Igipimo cyerekana umuvuduko Simbuza kashe niba hydraulic unit yatembye Sukura muyunguruzi Menya neza ko amavuta ahagije kugirango akore Hindura amavuta ya hydraulic Simbuza niba amavuta ya peteroli ari gucika |
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Shingiro Ikadiri | Ongera ushyireho imigozi iherezo ryikadiri Ongera usige irangi rya antirust nibiba ngombwa | ●
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Imbaraga Isoko | Kanda buto yo kugerageza ya sisitemu yo kurinda kugirango umenye neza ko ishobora gukora bisanzwe Simbuza umugozi niba wacitse | ●
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“●” period Igihe cyo kubungabunga
9.3 Isesengura ryimikorere kenshi nibisubizo
Mugihe cyo gukoresha, hydraulic unit hamwe nu mashanyarazi birashobora kugaragara ibibazo bimwe.Imikorere mibi ikunze gutondekwa kuburyo bukurikira:
Nyamuneka koresha ibikoresho bifatanye, ibice byabigenewe cyangwa ibindi bikoresho hamwe nicyemezo cyumutekano mugihe ukomeza cyangwa usimbuze ibice.Ibikoresho nibice bidafite icyemezo cyumutekano birabujijwe gukoreshwa.
Imikorere mibi ya hydraulic | |||
No | imikorere mibi | gusesengura imikorere mibi | Ibisubizo |
1 | Moteri ya pompe ntabwo ikora |
| |
2 | Moteri ya pompe izunguruka buhoro cyane hamwe n urusaku rudasanzwe |
| 1. Menya neza ko umutwaro wa moteri uri munsi ya MPa 3 2. Gusana cyangwa gusimbuza pompe 3. Sukura akayunguruzo 4. Reba ihungabana ryimbaraga |
3 | Silinderi ikora bidasanzwe |
| u Simbuza icyerekezo cyerekezo. u Himura silinderi inshuro nyinshi kugirango usohoke umwuka. u Hindura igitutu cya sisitemu u Simbuza byihuse u Funga valve |
4 | Amashanyarazi yamenetse | 1. Impeta y'amavuta ni amakosa 2. Silinderi cyangwa piston byangiritse cyane | 1. Simbuza impeta y'amavuta 2. Simbuza silinderi |
5 | Umuvuduko ntushobora kwiyongera cyangwa guhindagurika ni binini cyane | 1. Intangiriro ya valve yuzuye irahagaritswe. 2. Pompe irekuye. 3. Umwanya uhuriweho wa pompe urarekuwe cyangwa urufunguzo rwibanze rurasimbuka. 4. Umuvuduko wo kugabanya umuvuduko ntugifunze | 1. Sukura cyangwa usimbuze intandaro ya valve irenga 2. Simbuza pompe 3. Simbuza akajagari 4. Funga valve |
Imikorere mibi yamashanyarazi | |||
1 | Imashini ntabwo ikora |
| 1. Reba umugozi w'amashanyarazi 2. Reba imbaraga zakazi 3. Fungura ikibanza cyubutaka |
2 | Ingendo zo guhindura amakosa |
| 1. Reba insinga z'amashanyarazi 2. Reba ibintu by'amashanyarazi. 3. Reba igikoresho cyo hejuru cyumutekano wimbaraga |
3 | Ubushyuhe budasanzwe buriyongera | 1. Guhindura ubushyuhe burakinguye 2. Rukuruzi (pt100) ntisanzwe.Agaciro ko kurwanya 4 na 5 yo gushyushya isahani igomba kuba muri 100 ~ 183Ω 3. Inkoni yo gushyushya imbere yisahani idasanzwe.Kurwanya hagati ya 2 na 3 bigomba kuba muri23Ω.Kurwanya insulation hagati yumutwe wogushyushya inkoni hamwe nigikonoshwa cyo hanze bigomba kuba birenze 1MΩ 4. Niba ubushakashatsi bugenzura ubushyuhe burenze 300 ℃, ibyo bikaba byerekana ko sensor ishobora kwangirika cyangwa ihuriro rikarekurwa.Niba umugenzuzi wubushyuhe yerekana LL, ibyo bikaba byerekana ko sensor ifite uruziga rugufi.Mugenzuzi wubushyuhe yerekana HH, byerekana ko uruziga rwa sensor rufunguye. 5. Kosora ubushyuhe ukoresheje buto iri kumugenzuzi wubushyuhe.
| 1. Reba aho uhurira 2. Simbuza sensor
3. Simbuza isahani yo gushyushya
4. Simbuza ubushyuhe
5. Reba uburyo bwo gushyiraho ubushyuhe 6. Reba kandi usimbuze abahuza nibiba ngombwa |
4 | Gutakaza ubushobozi iyo ushushe | Itara ritukura rirabagirana, ariko ubushyuhe buracyazamuka, ni ukubera ko umuhuza ari amakosa cyangwa ingingo 7 na 8 ntizishobora gufungura iyo zibonye ubushyuhe bukenewe. | Simbuza ubushyuhe
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5 | Igikoresho cyo gutegura ntabwo kizunguruka | Guhindura imipaka ntigikora cyangwa ibice byubukanishi bwibikoresho byo gutegura byaciwe. | Simbuza igikoresho cyo guteganya imipaka ihinduka cyangwa uduce duto |
Imbonerahamwe y'akazi
Wuxi Shengda Sulong Technology Co., Ltd.
Tel: 86-510-85106386
Fax: 86-510-85119101
E-mail:shengdasulong@sina.com