brass fitting

Figur 7 is Inflatable Whale a brass mechan properti of the zinc vari the curve. For α brass, 3 the mechan properti of zinc brass becaus of differ mechan properti ar different. with the increas volum of zinc, σ b and δ ar rising. For α + β ) brass, zinc when volum increas to about 45%, at room temperatur strength continu to increase. If further increas the volum of zinc, as Alloi ha emerg in the greater fragil of the r Cu5Zn8 compounds, as the solid solut , the drastic reduct in strength. Α + β ) at room temperatur plastic brass were alwai with the increas in zinc and lower. So zinc in excess of 45% of the copper-zinc alloi no practic value.

zinc composit of the brass call on ordinari brass. If it is from the abov two kind of element call on the variou special brass alloy. If the lead,Brass is compos of copper and zinc alloy. If it is onli the copper. tin, manganese, nickel, lead, iron, copper alloi compos of silicon. Brass ha strong wear resistance. Special Brass special brass call it high strength, hardness, corrosion-resist chemical. Also cut the mechan properti ar more prominent. From the brass pull into a seamless brass, soft, strong wear resistance. Brass seamless tube heat exchang and condens can be us for low temperatur piping, the Cross-Harbour transport tube. Manufactur sheet metal, beams, rods, tubing, such as cast parts. Copper in 62% ~ 68%, plastic-to creat pressur equipment.

brass brass is divid into ordinari and special brass two. Pressur process brass call deform brass. A ccord brass alloi element contain in the differ types.

1. Ordinari brass

zinc variat range, 1 Gener Organiz ordinari brass at room temperatur Cu-Zn binari alloi is brass. so the room temperatur organ were veri different. Accord Cu-Zn binari state diagram Figur 6 , the brass at room temperatur three organizations: 35% zinc volum in the follow brass, at room temperatur microstructur from single-phas solid solut compos of α , α call brass; zinc in the 36% to 46% within the scope of brass, at room temperatur by the microstructur α + β ) two-phas component, known as the α + β ) brass two-phas Brass ; zinc content in excess of 46 per cent to 50 per cent of the brass, at room temperatur microstructur onli by β phase, known as β brass. brass fitting

can withstand the cold processing, 2 pressure- α process perform of brass from the H96 and H65 ha a good plasticity. but α brass in the single-phas heat processing, forg and other vulner emerg temperatur brittle, with the specif temperatur rang volum contain Zn vary, gener between 200 to 700 ℃ . Therefore, thermal process temperatur should be higher than 700 ℃ . Single-phas α Brass temperatur brittl zone is the main reason in the Cu-Zn alloi α phase of the region there is a Cu3Zn and orderli Cu9Zn two compounds, in the low-temperatur heat in an orderli chang to Alloi addition, Alloi in the amount of lead, bismuth and copper form harm impur low melt point eutect film distribut in the grain boundary, the thermal process of a ruptur between the crystal. Practic show that, by ad small amount of cerium can be effect elimin in the temperatur brittle.

in addit to Alloi Plastic good α phase,Brass two-phas from the H63 and H59 . but also emerg from the electron CuZn-bas compound β -solid solution. Β -phase high temperatur with high plasticity, and temperatur of β phase orderli solid solut hard and brittl nature. Therefore, α + β ) brass should be carri out in the hot forging.brass ball valve

not pressur processing. Zinc is greater than 46% to 50% of the β brass becaus of hard and brittle.