Friday, May 11, 2012

.THODU VANCHI NEVICHARI JUO.Mane khabar 6e tya sudhi GRAPHITY SANSFRANSISKO na ek shiksan sansthani diwal pr hatu je aje bharat ma ek lokpriya sms bani gayu 6e. Premnu nam pade etle bharatio bahuj serius ane tension ma avi jay.premiyo bharat mate hamesha mazak nu patra rahya 6e.pan ahi prem to hamesha pavitra puja ne patra rahyo 6e ane rehse pn jo apni ajni yuva pedhi tene sachavshe.ameri ca jeva deshoma stithi ulti 6r.bharat ma loko premni puja kare 6e pn tya premni mazak uthavi sakay.ISHQ ne abad kehvavalao koi jodlu jaher ma aa bandagino inkar kare to dhoko layne marva dode. IT ALWAYS HAPPEN IN INDIA,bija deshoma saream vitlayne ek bijama khovayne gel gammat karta yugalo nu sthan have apnaj ahina yuvano lay rahya 6e. America jeva deshone swarg manvama aave 6e karan k apnu swarg apsarao vagar bantu nathi. Videshoma prem nathi karta fakt SEX j kare 6e.manyata dhire dhire manas no dastikon badli nakhe 6e,pa6i bharatiy dimag ne hamesha fakt spars maj maza ave 6e.jema bilkul sanvedna hoy.abnormal 6e k prem karnarao mate lagn karva jaruri nathi hota "LOVE MAKING"premna utpadan ni prayogsala sharir 6e? Prem ma jyare pan lakhvanu aveto radha-krishn,mi rabay ni vat av6e.ek vat sachi 6e k videshoma TV chanel k magazine love k valantine day pr story athv bhasan deshe to tya MAN NI SATHE TAN NI VAT JARUR AAV6E tyana scientisto pagalo ni jem teni pa6al padi gaya 6e.brain scan kare 6e,prayogoj karya kare 6e. Tyani koi book store ma jav to koi pn ena lovesectionma jav tya mota bhagni kitabo love ni chemistry ane biology samjavshe.mara khyal mujab videshoma ADU khayne prem thay tyare kayu hormons peda thay and dimag ma keva rasaynik ferfar thay tej shodhya kare 6e.pan hajee sudhi te evu rasayan nathi sodhyu k viegra ni jem farmastyuticle jene pidha pa6i k pivdavya pa6i prem ma padi sakay k padi sakay. Purv ane paschim vacheni prem ni sarhado nakki kare 6e. PREM THAVA MATE PREM NI SAMJUTI AVASHYAK6E? car driving mate car mechanics banvu jaruri nathi.jyare bhulkao ice-cream khata teo tena swad ne mane 6e k tenu vigyan yad kare 6e? satat tyagni j himayat karnar hindustani dimag pr adhyatmani agarbatino dhoomado vishesh 6e. American dimag science high voltage laser beem thi love ne juve 6e.love is love. its something magicaly some thing different aathi vichari jojo k atli lambi spastata pa6i jara american ane prem pr kalamne zooooomkariye paheli nazare evu lage 6e k tya paisa prattyej prem 6e.london jeva deshoma jainebharat ni sanskriti bhulvanu shikhiye 6iye. LOVE FOR BUISINESS AND BUISINESS OF LOVE VALANTINE DAY AVSE K CANDLE LIGHT ROMENTIC DINNER,CHOCKOLA TE RED RIBIN CARDS....DHOM KAMANI THASHE,KAMANI KYARE THASHE K JYARE LOKO PREM NA NAME PAGALNI JEM PAISA KHARCHSE. prem ne aje bharatioj nathi samjee rahya pan prem ma hovu ane khwab jova badhane gamse.cigaret 6odvi to sav sehli 6e,me sambhadiyu pn 6e.america nu pn avuj kain prem ma chhe.tya kam se kam das var prem ma padi sakay.yad rakhjo gujaratio k first lovesabd tyarej aave k jyare second kashuk hoy TEMA DIL CHORI NATHI HOTI.COCA COLA NI JEM FIN NI JEM ZANOON OSRE ANE MANAS KANTALE TE BADHU TO VIDOSONA KHOON MA 6E APNE TO BHARAT MATANA SANTANO 6IYE. aje facebook ane orkut pr yuvanoni post vicharo joine ghanu badhu dukh thay 6e k apna desh ni sanskriti sayad nash thai rahi 6e. 21 mi sadi nu U.S. Kadach love and life,hase tomove on ma mane 6e.prem ne khoobsurat anubhooti hoy to varamvar thavi joiye k ekvarkhumar akhi jindagi bhr chale.aje america na 2012 jevi dizaster film ne bharatiy jevu bampar opening nathi malyu.prem vishwavyapi 6e.apne tya pyar pr maryadani mahor lagavi 6e.ahi prem lagn kare to utshah ne badle udashi no vishay bani jay. 6okrao mote bhage 6okri ni friendship ne love samajvani bhul kare 6e ane 6okri 6okraona love ne frndshp samajvani aa rite prem ma bharat videshothi judo pade 6e pn atyare evu lage 6e k bharatio aje bahuj vadhare padtu anukkaran kari rahya 6e.HU TOPUCHHTOJ HATO K VATE VAT MA AMERICA,LONDON NE APNAVNAR BHARAT SHU TYANA LOVE NE SAMJEE K SWIKARI SAKSHE?PN TE TO AJE SACHEJ THAI RAHYU 6E. tena jimmedar apne 6iye.apne bharat mate kashuk kari batavavu,teni izzat sachavavi,teni raksha karvi ae apni faraj 6e.mane kyarek lage 6e k bharat mani izzat aje tena santano o6i kari rahya 6e.so all facebook friend think about on this thought and go to ue target.jay hind and tak crae all/avjo ane ek vruksh vavjo

Wednesday, January 4, 2012

शेल्लिंग इन काट

Sand casting

Sand casting has many defects that can occur due to the mold failing. The mold usually fails because of one of two reasons: the wrong material is used or it is improperly rammed.[22]

The first type is mold erosion, which is the wearing away of the mold as the liquid metal fills the mold. This type of defect usually only occurs in sand castings because most other casting processes have more robust molds. The castings produced have rough spots and excess material. The molding sand becomes incorporated into the casting metal and decreases the ductility, fatigue strength, and fracture toughness of the casting. This can be caused by a sand with too little strength or a pouring velocity that is too fast. The pouring velocity can be reduced by redesigning the gating system to use larger runners or multiple gates.[22][23] A related source of defects are drops, in which part of the molding sand from the cope drops into the casting while it is still a liquid. This also occurs when the mold is not properly rammed.[24]

The second type of defect is metal penetration, which is when the liquid metal penetrates into the molding sand. This causes a rough surface finish. This caused by sand particles that are too coarse, lack of mold wash, or pouring temperatures that are too high.[24]

If the pouring temperature is too high or a sand of low melting point is used then the sand can fuse to the casting. When this happens the surface of the casting produced has a brittle, glassy appearance.[24]

A run out is when the liquid metal leaks out of the mold because of a faulty mold or flask.[24]

Scabs are a thin layer of metal that sits proud of the casting. They are easy to remove and always reveal a buckle underneath, which is an indentation in the casting surface. Rattails are similar to buckles, except they are thin line indentations and not associated with scabs. Another similar defect is a pulldowns, which are buckles that occur in the cope of sand castings. All of these defects are visual in nature and no reason to scrap the workpiece.[25] These defects are caused by overly high pouring temperatures or deficiencies of carbonaceous material.[24]

A swell occurs when the mold wall gives way across a whole face, and is caused by an improperly rammed mold.[24]

Burn-on occurs when metallic oxides interact with impurities in silica sands. The result is sand particles embedded in the surface of the finished casting. This defect can be avoided by reducing the temperature of the liquid metal, by using a mold wash, and by using various additives in the sand mixture.[26]