Butterfly valve, also called the flap valve, is a valve with a disc
(clackor plate) as stopping component, revolving around the axis to the effect
ofopening and closing. Butterfly valve is a kind of regulator with
simplestructure. It mainly plays the role of block off and throttling in the
pipeline,also can be used for switch control in low pressure pipeline medium
Butterfly valve consists of body, disc, seat and stem.
The valve body material basically include: gray cast iron, ductile iron,carbon steel.
Material:HT200
hardness:HB260
Machining techniques of valve body
★Facing and external turning
★Center hole machining
★Drilling and waist-shaped grooving
★Push rod hole machining
★Machining of small holes in push rod hole surface
1. Facing and external turning
R type shown
Rough turning end face and exterior
Insert:YBD152/CNMG120408-PM
Cutting data:V=
Finishturning end face and exterior
Tool:PCLNL
Insert:YBD052/CNMG120408-PM
Cutting data:V=
End face groove turning
Tool:QFGD2525LL13-130H
Insert:YBG302/ZTGD0404-MG
Cutting data:V=130m/min; f=0.1mm/r; ap=1mm
1. Center hole machining
R type shown
Turningcenter hole
Tool:S32R-SCLCL12
Insert:YBD152/CCMT120408-HM
Cutting data:V=
Grooving
Tool:SMP05-039*3.0-XP25-QC16-03
Insert:YBG205/QC16L300-R02
Cutting data:V=150m/min; f=0.15mm/r; ap=3mm
1. Drilling and waist-shaped groove millling
Drilling:(Φ23 x 8)
Tool:ZTD03-230-XP25-SP07-02
Insert:YBG205/SPGT07T308-PM
YBG212/SPGT07T308-PM
Cutting data:V=
Waist-shaped groove milling:(Φ24×40,depth:20)
Tool:GM-2E-D20.0
Cutting data:V=130m/min,f=0.15mm/r,ap=10mm,ae=20mm
1. Push rod hole machining
Hole milling face:
Tool:FMD02-063-A22-PN11-05
Insert:YBD152/PNEG110512R-CR
Cutting data:V=
Push rod drilling
Tool:1101SC05-1550
Cutting data:V=
Push rod reaming
Tool:compound dill D22.5-28.5-R2
Cutting data:V=
Push rod fine boring
Tool:DGR4
Insert:YNG151/TPGH
Cutting data:V=
Push rodhole thread milling
Tool:4111—M10
Cutting data:V=50m/min. f=0.08mm/r
1. Machining of small holes in push rod holesurface
Drilling
Tool:1557SU03—M6
Cutting data:V=
Tapping
Tool:
Cutting data:V=