904L 9.52*1.24mm Stainless simbi yakamonerwa tubing kemikari chikamu ,Gramophone Dreams #70: Sutherland Engineering SUTZ & Lounge Audio Copla preamp, Dynavector DV-20X2 uye XX-2 MKII cartridge

Asi pandinonyora koramu iyi yemwedzi nemwedzi, ndiri kuvavarira kunzwa kwakasiyana, sekutyaira '70s Ford station wagon off-road uye kunyora motels uye magasi.Rwendo rwacho rwainakidza, rwuri nyore, nemaonero akanaka uye kumira pamiziyamu yega yega yemota, purazi renyoka nebako re stalactite.

Tsanangudzo

904L 9.52 * 1.24mm Stainless simbi yakakombwa tubing vatengesi

alloy 904L tubing (UNS N08904) kuti ishandiswe mumashandisirwo anoda pakati nepamusoro corrosion resistance.Alloy 904L isimbi yakaderera kabhoni yakakwira alloy austenitic Stainless simbi, yakatanga kugadzirwa kuti irambe corrosion mu dilute sulfuric acid.Nekuda kwekubatanidzwa kwechromium, nickel, molybdenum nemhangura, giredhi iri rakavandudza kurwisa kune yakasimba kuderedza asidhi, kunyanya sulfuric acid.Alloy 904L tubing zvakare inoshingirira kurwiswa kwechloride kubva kune ese magomba / crevice corrosion uye stress corrosion kuparuka.Alloy 904L haisi-magnetic mumamiriro ese, ine kuoma kunoshamisa, uye ine yakanaka kuumbwa uye weldability.

Nekuda kwezvivakwa izvi, munhu anogona kuwana alloy 904L chubhu mune akawanda maapplication.Izvi zvinotangira kubva ku utility scrubber assemblies kuenda kune acid nefotereza yekugadzira michina, pulp nemapepa kugadzira, zvivakwa zvekutonhodza mvura yegungwa.Inoshandiswa muzvirongwa zvine sulfuric kana phosphoric acids, 904L inoratidza kuramba kwayo kwakanakisa kumarara kubva kune aya acid.Mapepa, gasi, mishonga yemishonga uye makemikari maindasitiri anoshandisawo 904L nokuda kwekudzivisa kwayo uye kushandiswa kune 400-450 madhigirii C. Alloy 904L tubing inogona kugadzirwa, yakagadzirwa, kupisa kupisa, kuvharwa, kuoma uye kutonhora kushandiswa kwezvinangwa zvakawanda.

UNS NO8904, inowanzozivikanwa se 904L, isimbi yakadzika kabhoni yakakwira alloy austenitic simbi isina tsvina iyo inoshandiswa zvakanyanya mumaapplication apo iyo corrosion properties yeAISI 316L uye AISI 317L haina kukwana.

Kuwedzerwa kwemhangura kune iyi giredhi kunoipa iyo isingadziviriri zvivakwa zvepamusoro kune yakajairwa chrome nickel simbi isina tsvina, kunyanya kune sulphuric, phosphoric uye acetic acids.Zvisinei, pane kushandiswa kushoma nehydrochloric acids.Iyo zvakare ine yakanyanya kupikisa kupinza mu chloride mhinduro, kupikisa kwakanyanya kune ese ari maviri crevice uye kusagadzikana ngura kupaza.Alloy 904L inoita zvirinani kupfuura mamwe austenitic Stainless simbi nekuda kwekukwira kwepamusoro kwe nickel uye molybdenum.

Iyo giredhi haina-magnetic mumamiriro ese uye ine yakanakisa formability uye weldability.Iyo austenitic chimiro chinopawo iyi giredhi kusimba kwakanyanya, kunyangwe pasi kusvika kune cryogenic tembiricha.

Iyo yakakwira chromium inosimudzira uye inochengetedza firimu inodzivirira iyo inodzivirira zvinhu munzvimbo dzakawanda dzinoparadza.904L ine hukuru hwekudzivisa kunaya kweferrite uye sigma phases pakutonhora uye welding pane mamwe masimbi asina tsvina ane molybdenum akadai 316L uye 317L.Iko hakuna njodzi yeintercrystalline corrosion pakutonhodza kana welding nekuda kweiyo yakaderera kabhoni yemukati.Kupisa kwayo kwakanyanya kwesevhisi kuri pa450°C.

Iri giredhi rinonyanya kubatsira mukutonga uye instrumentation tubing application uko 316 uye 317L isina kukodzera.

904L Stainless simbi inosanganisa molybdenum nemhangura nedare kuti iwedzere kupikisa kuderedza maasidhi akaita sesulfuric acid.Iyo inomira zvakanaka zvakanyanya kune ma chlorides munzvimbo yepasi gomba uye crevice corrosion, pamwe nekushushikana kwegora kutsemuka.

904L Stainless Simbi Mapaipi uye Machubhu Chigadzirwa Range 904L Stainless Simbi Mapaipi uye Machubhu Madiro: ASTM A/ASME SA 269/677 904L Stainless Simbi Mapaipi uye Machubhu Saizi (Seamless): 1/2″ NB Isina Simbi 8″ NB 8 ″ NB - 8 ″ NB isina Steel Saizi (RW): 1/2″ NB – 24″ NB 904L Mapaipi eSimbi Isina Stainless uye Makura Saizi (EFW): 6″ NB – 100″ NB

»904L Stainless Steel Pipes and Tubes Dimensions: Mapaipi ese anogadzirwa uye anoongororwa / akaedzwa kune akakodzera zviyero zvinosanganisira ASTM, ASME uye API etc. Key Properties Izvi zvivakwa zvakatsanangudzwa kune flat rolled chigadzirwa (plate, sheet uye coil) muASTM B625. .Zvakafanana asi zvisingaite zvakangofanana zvivakwa zvinotsanangurwa kune zvimwe zvigadzirwa senge pombi, chubhu uye bhara mune yavo yakatarwa.

Applications

904L simbi isina tsvina inoshandiswa zvakanyanya mumakemikari, mishonga, mafuta uye gasi maindasitiri.Mashandisirwo akajairika anosanganisira matangi, mavharuvhu, kupisa exchanger, flanges uye manifolds.Kuwedzerwa kwemhangura pakuumbwa kwe904L simbi isina tsvina inobatsira kukodzera kwayo kwezvikamu zvakaita sematangi uye zvimwe zvigadzirwa zvinoshandiswa mukubata sulfuric uye phosphoric acid.

Mwedzi uno, ndichange ndichityaira mamaira mashoma ndichidzika neFord odometer ndichiongorora mabatiro echigadzirwa chazvino chaRon Sutherland: a $3,800 transimpedance dynamic preamplifier inonzi SUTZ.Ndiri munzira, ini ndichadzokera zvakare kune iyo $1250 Dynavector DV-20X2 ine simba cartridge uye kuongorora chingave chakanakisa muDynavector cartridge line: iyo $2150 XX-2 MKII.
Pakupedzisira, ndichambozorora, ndobuda mumotokari, uye ndozvijairana neLounge Audio's $355 Copla preamp, yandanga ndichishandisa nechido kubva pakuongorora muna Kukadzi 2018, asi handisati ndanyora nezvayo kubva pakuongorora.
Sutherland Engineering SUTZ Ndakapedza nguva yakawanda ndichiedza kufungidzira ruzha rwese rwemagetsi rwunokonzerwa nekuzunguzika kwechimuti chakabatana nerumwe rudzi rwekoiri mundima yemagineti.Ndakafungidzira rekodhi rekodha yakarembera kubva pane diki tsono/cantilever/coil, ichitambanudzira tambo yetambo uye ichizunza coil kuburikidza nemitsara yakasimba yesimba yakagadzirwa nehoveshoe magineti diki.Sezvo makoiri achipfuura nepakati pemagineti flux yemagneti, ikozvino inokwengerwa nekureba kwayo.
Ndakadzidza kudhirowa chikamu chemutemo waFaraday muchikoro chepuraimari.Muchikoro chesekondari, mumwe mudzidzisi akatsanangura mutemo waLenz, uyo wakanga wakatooma kunzwisisa: “Kutenderera kwemagetsi kunokonzerwa nokuchinja kwemagnetic flux kunogadzira simba rine simba remagineti rakapesana nekuchinja kwakaikonzera.”
Sezvineiwo, mutemo waLenz uye kudzongonyedza kwaro kwakauya mupfungwa dzangu pandakanga ndichiedza kufungidzira kuti nhanho dzezvino inodzorwa dzaizoita sei uye nei dzaizokanganisa kurira kwekaseti nenzira iyi.Kurangarira uku kwakandiita kuti ndipe zano kuti kurodha katuriji inofamba ine diki diki diki (hapana yekupinda voltage) inokwirisa iyo yazvino inoyerera kuburikidza nekaturiji coil, iyo inozowedzera mutemo weLenz reverse thrust, nekudaro ichidzika kuti iwane iyo yakanyanya kunaka kufamba kweiyo. cantilever coil (chinyorwa 1).
Ndakabva ndaedza kufungidzira kuti iyi yazvino damping ingafananidzwa sei nekunyorovesa kwakapihwa neyechinyakare shunt resistor pamberi peiyo inoshanda nhanho.Ini ndagara ndichifunga kuti misiyano yese yemutoro / kunyorovesa inokanganisa kuti stylus inoteedzera sei grooves rekodhi, uye ndasvika pamhedziso yekuti misiyano mukunyorovesa (chero ingave) inokonzera mutsauko mukutevera, groove. ruzha, visceral kunzwa Causal details uye intermodulation kukanganisa.
Parizvino, ndakafukidza boka rematanho anoenderana-akaremerwa phono, akasiyana nhanho-kumusoro ekushandura, uye matatu "transimpedance" phono nhanho: Lounge Audio's Copla yemadhora mazana matatu nemakumi mashanu, Dynavector's P75 MK3 phono nhanho yemadhora mazana masere nemakumi mapfumbamwe nemashanu, uye Sutherland Engineering's Little Loco ye. $3,800.
Nhoroondo, kuravira kwangu mukutamba kwegiramufomu kwafarira yakakwirira-nickel nhanho-kumusoro ma transformer anoedza kupfuudza mhepo uye filaments yeRIAA chubhu EQs.Nguva pfupi yadarika, zvakadaro, ndanga ndichifamba mune yakaderera-level, yakakwirira-density ruzivo kubva kuSutherland Engineering Little Loco ikozvino-inodzorwa phono nhanho dzandanga ndichishandisa neMy Sonic Lab's low-output (0.3mV), yakaderera-impedance. (0 .6 ohm) Ultra Eminent EX ine simba katuriji.Little Loco inoita kunge inosimudzira zvese zvishoma katuriji inozvipa.Kuenzaniswa neruzha rweEminent EX pachikuva paParasound Halo JC 3+ phono nhanho, iyo My Sonic-Loco combo yakaridzwa yakakura (maererano nemufananidzo nenzvimbo inonzwika) uye yakapfava (maererano nemaitiro uye chiyero) - ne gomba rakadzikadzika shure.Aya mashoko akanyarara.
Saka ndakaerekana ndanamira: ndinowana sei kunyarara-kwese kunyarara uye isina zviyo-microdata pasina kumanikidzwa kusiya CinemaScope uye RIAA's chubhu nhanho tekinoroji?
Ndakatsanangura dambudziko iri kushamwari yangu Chad Stelly, uyo akaunza dambudziko kushamwari yedu tose Ron Sutherland weSutherland Engineering (chinyorwa chepazasi 2);Ron akabva angopindura kuti, “Ndazvigadzirisa!”Kwapera vhiki, ndakapindawo.Ron yazvino kugadzirwa, iyo "SUTZ" transimpedance preamplifier, kune iyo 47 kΩ inofamba magineti yekupinza yeTavish Dhizaini Adagio yese-tube phono nhanho.
Iyo SUTZ preamp kubva kuSutherland Engineering inoshandisa yakafanana 17 x 2 x 13 ″ chassis seye Little Loco preamp yandakatsanangura muna Ndira wangu 2022 stereophile.Muchokwadi, SUTZ inotaridzika chaizvo seLittle Loco mukati nekunze.iwo matatu akafanana jumper-activated kuwana marongero seLittle Loco.Pandakabvunza kuti SUTZ yakawana chii, Ron akanditumira email kuti maSUTZ ese achauya aizowana zvigadziriso zvishanu, asi akangondituka.A transimpedance amplifier haina "kuwana" nekuti mayuniti ekuisa (amperes) haaenderane nezvinobuda zvikamu (volts).“(mashoko omuzasi 3)
Ndisati ndatanga, ndinofanira kutaura kuti boka rezvikamu zvandiri kushandisa ndiro randinodaidza kuti "chaiyo-fi" system: phono cartridge uye step-up transformer yakabatana ne10.5 ″ Thomas ruoko.Schick Dr. Feickert Blackbird rotary EQ, Tavish Design Adagio phono stage kana SunValley SV EQ1616D phono stage, Lab 12 Pre 1 line level preamp yakabatana neElekit TU-8600S SE amplifier (ine Western Electric 300B tubes), yeFalcon Gold.Munguva iyi maauditions, ndaigara ndichiyeuchidzwa kuda kwandaiita sisitimu iyi uye kuti yakarekodha neinzwi rakanyatsojeka uye kurekodha kwechokwadi kupfuura chero system yandakavaka kubvira pandakatanga kunyorera Stereophile.
Dynavector DV-20X2 Kubva pandakaiongorora muGramophone Dreams #10, hapana kaseti mumba mangu yakaridza madhisiki akawanda kupfuura $1,250 Dynavector DV-20X2 dynamic player.Ndapedza mazana emaawa ndichiitamba painoda kusvika gumi nemaviri.Inotamba nenzira yandinoda maturuji anotenderera: akajeka, anokurumidza, uye anonzwisisa.Ane mojo-vivo yakakwana kuti aite kurekodha zvine simba zvine magumo akapinza uye mapfuti, zvese zvakasununguka.Panguva ino yemutengo, mashoma cartridges anogona kuita ese ari maviri.Vanhu vazhinji havagoniwo.
Kunyangwe nenguva yese yakashandiswa, 20X2 ichiri kukwanisa kuburitsa mimhanzi inoputika asi ichizorodza, nekutendeka kudzoreredza imwe yeakanakisa uye yakakurumbira zvakarekodhwa neanjiniya wemumunda David Lewiston: Golden Rain LP “Ketjak: Ramayana Monkey Chant” (LP Nonesuch Explorer).H72028).Shanduko dzine simba dzemamongi mazana maviri vaiimba pamwe chete dzaishamisa, kunyangwe ndaiziva kuti vaive voda kuridza mhere yekuti 'tak'.Mamongi ari muchivanze akarongwa mudenderedzwa rakadzikama, izvo zvinonzwisisika pakatarisa.Mundima dzakanyarara, ziso repfungwa dzangu rinoda kuona nzvimbo yemamongi ega ega anoimba kumagumo emadenderedzwa aya.Apo mamongi akarega kudanidzira, ruzha rwakapoteredza muchivanze rwakaita kuti ndione uye ndinzwe kuvapo kwavo.Makatuji ane iyi nhanho yekunzwisisa haawanzo pamutengo uyu.
Pese pandaitamba "Monkey Chant" neDynavector 20X2 MC, Sutherland SUTZ, uye SunValley SV EQ1616D all-tube phono stage, ndaikatyamadzwa nekuyeverwa nekujeka kwakachena, kumhanya kwemheni, uye masimba asina kuzeza.zvipfupi zvinoitika nenzwi rakajeka uye rakapinza rine mikaha inooneka pakati pemanzwi emuimbi.Kwandiri, iyi imhando nyowani yewow!Moment: Yazvino dhisiki ruzivo inokwidziridzwa neSunValley machubhu.
Dynavector XX-2 MKII Chad Stelly akafara neni mune chinyorwa nezve "inoshamisa synergy" yeDynavector XX-2 MKII dynamics neSutherland SUTZ, saka ndakabata Mike kuToffco, Dynavector's US distributor, Prank (pazasi 4), anotsinhira. Kuona kwaChad kuti iyo $2,150 XX-2 MKII ingangove "nzvimbo yegoridhe" mumutsetse weDynavector cartridge.Ino ndiyo nguva inonakidza yeDynavector.
Ndichiri kukwezvwa neDynavector cartridges nekuda kwekutaura kwavo kuti vanotarisisa chirongwa cheinjiniya pane musimboti wedambudziko: dhizaini redunhu.Webhusaiti yavo inotsanangura kuti: "Kuverenga kwedu uye kuyedza kwakaratidza kuti kunyangwe kudiki kudiki kuchinjika kunogona kukonzera shanduko musimba remagineti mugedhi remhepo, zvichikanganisa kukanganiswa kweiyo inobuda chiratidzo."5 magineti panzvimbo yesamarium-cobalt kana neodymium-boron.Chinangwa chakataurwa cheDynavector's patented "flux damping" uye "soft magnetic field" ndeyekudzikisa "kusingadiwe magineti kushanduka".
Zvinoenderana newebhusaiti yeDynavector, iyo XX-2 MKII inoshandisa magineti eAlnico 5 (chinyorwa chepasi 5) sezvo iine yakakwira magineti flux density iyo, ichienzaniswa nemamwe marudzi emagineti, "inoburitsa yakanyanya kugadzikana magineti uye nekudaro inochengeta yakagadzikana kubuda. voltage"..
Iyo XX-2 MKII ine yakaderera (6 ohm) kupikisa kwemukati uye yakaderera yakabuda voltage ye 0.28 mV.Motokari yayo inogara mune yakaomeswa 7075 aluminium dzimba uye iyo cartridge inorema 9.2 magiramu.Kuteerera kunotsanangurwa pa10 µm/mN uye Dynavector inokurudzira mutoro wakaderera (30 ohms).
Iyo 20X2 inoshandisa yakavhurika MicroRidge stylus pane dural chubhu cantilever, nepo XX-2, iyo yakachipa cartridge muDynavector mutsara, inoshandisa yakaoma boron cantilever ine Pathfinder stylus ine 7 × 30 µm mutsara wekubata pamuromo.Ini Kana ndikarangarira nemazvo, iyi idhaimani rimwe chete reOgura rakashandiswa naLyra naKoetsu.
Epazasi 3: Nehunyanzvi kuona kuwanikwa kweiyo transimpedance phono nhanho hakuna kuoma: zvakafanana semazuva ese, chiyero chekubuda kwevoltage kune yekuisa voltage kana kubuda ikozvino kune yekuisa ikozvino - sarudza imwe yacho.Asi iyo haisi iyo huwandu hwekufarira kune yazvino-inopinza phono nhanho, ine basa nderekushandura ikozvino kuita voltage.Kune mudziyo wakadaro, iyo nhanho-up-yepamusoro-shanduko yekufananidza haidzivisiki, ndicho chikonzero nei Ron Sutherland akasarudza kudana chigadzirwa ichi SUTZ: inogona kutorwa semhando nyowani yedanho-up transformer, kunyangwe isiri shanduko mune yakajairwa. pfungwa.Sei Z pakupedzisira?Pamwe nekuti nzira yechisikigo yekuratidzira mudziyo wetransimpedance ireshiyo yekubuda kwevoltage kune yekupinda ikozvino, ine mayunitsi eimpedance, anowanzo kuratidzwa netsamba Z. - Jim Austin Jun 30 '11 na12:00
Chinyorwa 4: Dynavector Systems Ltd., 3-2-7 Higashi-Kanda Chiyoda-ku Tokyo 101-0031 Japan.Runhare: +81 (0) 3-3861-4341.Webhusaiti: www.dynavector.com US Distributor: Toffco, 2020 Washington Ave., Unit 314, St. Louis, MO 63103. Phone: (314) 454-9966.URL: dynavector-usa.com
Pazasi 5: Nhamba dzinotevera "Alnico" dzinoreva alloys akakosha ealuminium, nickel, cobalt, mhangura nesimbi.Alnico 5 inonyanya kupfuma mucobalt uye zvishoma zvishoma magineti kupfuura mamwe maAlnico alloys.Chero zvazvingaite, magitare emagetsi ane Alnico 5 akavakirwa pickups ane akachena ma transients uye inopenya toni.— Jim Austin
$ 3,800 yepamusoro-soro phono nhanho, iyo iri nani kupfuura iyo inoshamisa $ 89,000 mutengo weti CH Precision P1 phono nhanho yakaongororwa svondo rapfuura.Uye izvo "zvinogona" kunzwika zvirinani pamutengo we24.
Ndinoda kunzwisisa kuti transimpedance phono nhanho inogona kunzwika sei yakavhurika uye ine mhepo kana yakatakurwa neiyo yakaderera impedance cartridge.Makore eruzivo nematanho echinyakare ephono akandidzidzisa kuti kurodha pasi zvisina kufanira kunogona kudzora ruzha rwekaturiji.Sei izvi zvisingaitike ne transimpedance phono nhanho?
Funga nezvayo senge yakaderera impedance vatauri vanoshanda, vanodhirowa / kudhonza yazvino kubva kune amplifier, ngatitarisei, zviri nyore kutyaira vatauri vanowanzove vakareruka muruvara pane yakaderera impedance vatauri.
Isu takatakura iyo Supex SD900 iine zana ohm, mazana mashanu ohm, zana ohm, 50 ohm uye gumi ohm, iyo yakachena uye yakanyanya kunyorovesa ruzha iri pagumi ohm, asi iwe unoda kukwirisa uye "inogona" kuita ruzha kana yakagadzirwa zvisirizvo.