Ukufanana nokwenziwa kwezivali ezibhobho nezivali ezithwala

Inqubo ekhona phakathi kwezivale zokwenziwa ngokucacilekile kanye nezivale zokwenziwa ngokucacilekile

Ukwenza izinto zokwenza izinto zokwenza izinto ezinzima kakhulu kahle, kusuka kubonisa izinto ezinzima kakhulu, okuyinto kungcono; ngesikhathi esithile kunezinzuzo eziningi kanye nezinhlelo ezinhle zokusebenza kahle.

Kodwa, kukhona izinto eziningi (njengoba imithi, isikhumba, i-fuel, izinto zokwenza imodeli, njll.) kanye nezinto zokusebenza (njengoba i-furnace yemithi, isandisi, imishini yokwenza imodeli, imishini yokwenza isicoco, imishini yokudonsa isandla, imishini yokudonsa isandla, i-plati yemithi, njll.) okudinga ukwenza ukucasha, kuzoba nokwenza isikhumba, izinto ezithile ezinamandla ezinamandla nokushisa okwenza ukucasha, kuzoba nokwenza isikhumba, izinto ezithile ezinamandla ezinamandla nokushisa.

　　4. Casting is an early metal hot working process mastered by mankind, with a history of about 6,000 years. Copper frog castings appeared in Mesopotamia in 3200 BC. From the 13th century B.C. to the 10th century B.C., China entered the heyday of bronze casting, and the technology has reached a fairly high level. For example, the Simuwu square tripod of the Shang Dynasty, the Zenghouyi Zun disk of the Warring States period, and the transparent mirrors of the Western Han Dynasty are representative products of ancient casting. Early casting is influenced by pottery, casting most of the agricultural production, religion, life and other aspects of the tools or vessels, with a strong artistic color. In 513 BC, China cast the world's earliest recorded cast iron pieces, namely - gold tripod (about 270 kilograms). About the 8th century, Europe began to produce cast iron parts. 18th century after the industrial revolution, casting entered a new era for the service of big industry. 20th century, casting development is rapid, has developed ductile iron, malleable cast iron, ultra-low carbon stainless steel, aluminum-copper, aluminum-silicon, aluminum-magnesium alloy, titanium and nickel-based alloys, such as casting metal materials, the invention of the grey cast iron gestation treatment of the new technology. 20 century 50s, after the appearance of the After the 1950s, the emergence of wet sand high-pressure molding, chemical hardening sand molding core, negative pressure molding and other special casting and shot blasting cleaning and other new technologies.

Kunezinhlobo eziningi zezinto zokucindezelwa, ezithandwayo zibonakalisa: ukucindezela isandla esikhulu, okuyinto ukucindezela ngamanzi, ukucindezela ngomile, kanye nokucindezela ngamanzi okwenziwa ngezinto ezithuthukile. Ngokwesibonelo, ukucindezela okuthuthukile kungabonakalisa ezimbili: isandla esikhulu sezingozi ezinhlelweni zokucindezela okuyinto isandla esikhulu sezingozi (njengoba ukucindezela okuthuthukile, ukucindezela ngomud, ukucindezela ngokucindezela, ukucindezela ngokucindezela, ukucindezela ngokucindezela, ukucindezela ngokucindezela, njll.). Futhi izinto zokucindezela ezithuthukile nezinto ezithuthukile njengoba isandla esikhulu (njengoba ukucindezela okuthuthukile, ukucindezela ngokucindezela, ukucindezela okwesikhathi eside, ukucindezela okwesikhathi eside, ukucindezela okwesikhathi eside, njll.).

　　6. Casting process usually includes: the preparation of casting (liquid metal into a solid casting container), can be divided into sand, metal type, ceramic type, mud type, graphite type. According to the number of uses can be divided into a one-time mold, semi-permanent molds and permanent molds, and the quality of casting preparation is the main factor affecting the quality of castings; casting metal melting and casting, casting metal (casting alloys), including cast iron, cast steel and casting non-ferrous alloys; casting treatment and inspection. Casting treatment includes the removal of foreign matter from the core and casting surface, cutting off the pouring riser, removing burrs and seams, heat treatment, molding, rust prevention and rough machining. Imported pump valve two, forging

Ukwenza: Isitshini sokwenza okusezingeni eliphezulu kuyinto esetshenziswa ukuqinisekisa ukunquma kwemali yemali, ukuze kube yinto yokwenza okusezingeni okuphelele, ukuze kuthole izimo zemfundo ezithile, isilinganiso esisodwa nesize nesayizi lesitshini sokwenza.

Umuntu wokwenza izinto ezimbili ezinhlobo zokwenza. Ukwenza kwenza kungathuthukisa ukuphila kwemithi yokucastile nokuphila kwemithi yokusiza, izinto zezemfashini zinamakhemikhali okuhambisana kakhulu kunemithi yokucastile. Ngaphezu kwalokho, ngaphandle kwezinkambiso ezilula zokugcina, izinto zokwenza kwenza kwenziwa kakhulu emaceleni okugcina, amaprofayili noma izinto zokugcina, izinto zokwenza zisebenzisa kakhulu emaceleni okugcina, izinto ezimbi kakhulu ezifanele zokusebenza.

Ukwenza kwezinto kungathathwa njengoba: ukwenza okuvulekile (ukwenza okungasekho). Ukuxhuma noma ukuphila kwenziwa ukwenza isilwane phakathi kwezinkanyezi ezimbi nezinye (amathawula amathathu) ukuze kutholakale ukwenza okufanele. Kukhona izinhlobo ezimbili zokwenza: ukwenza ngezandla nokwenza ngokwezinsizwa. Ukwenza okufushane. Ibilithi yemali ekhethwe ekhulwini lokwenza elilodwa elingasiza ukwenza, kutholakala ukwenza, kungathathwa ngezinsizwa, ukwenza okugcwele, ukwenza okugqithisa, ukwenza okugqithisa, njll. Ukwenza ngokwesikhumba kungathathwa ngokwesikhumba kwezinto ezitholakala ekwenzeni okwenza, ukwenza okugqithisa (ukwenza okuphila okuphakathi kwezinkanyezi zokwenza zokwenza okuphakathi kwezinkanyezi zokwenza), ukwenza okufushane (ngaphansi kwezinkanyezi zokwenza zokwenza) nokwenza okugqithisa (indawo yotemperetha).

　　4. Forging material is mainly a variety of components of carbon and alloy steel, followed by aluminum, magnesium, titanium, copper and its alloys. The original state of the material includes bar, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of the metal before deformation to the area of the broken mold after deformation is called the forging ratio. Correct choice of forging ratio and improve product quality, reduce costs have a great relationship.

Izinkambiso zezivalo ziyisivale ziyenzelwe ngokwezindonga. Izivalo zezindonga ezinhle kakhulu ziyisivale ezinkulu zokuphansi (njengoba i-PN16, i-PN25, i-PN40, kodwa kukhona futhi ezinkulu, kuya kwi-1500Lb, 2500Lb), eziningi kuzo kungaphezulu kuka-DN50. Izivalo eziforged ziforged futhi kanye zisebenzisa kwezindonga ezinhle ngezinye izinsimbi ezincane kunazo, kuya kwi-DN50.