陽泉閥門股份有限公司

This standard applies to the process of valve products testing, including cast iron, bronze, machining and milling drill, manual device and testing of process quality control point.

2 Standard

QB/YF.Z.02.13－1998 inspect and test control process
QB/YF.Z.02.15－1998 inspect and test status indicator process
QB/YF.Z.02.16－1998 defective product control process

3 Responsibility

Quanlity control deparment for inspecting Iron castings, bronze pieces

Machine tooling inspector in charge of the inspection of Machine tooling,milling drilling operation,Manual device and procedure quality control point.

4 Ispection procedure

4.1Inspection for Iron casting;
4.1.1standard
According to regulation of classification for drawing outline and casting quality
attachment：regulation of classification for casting quality
4.1.2Key point of ispection
Body,disc,cover of pressure parts
4.1.3Inspection mode
Inspection for the first,Medium,final item from each bactch of products.

4.1.4Inspection record
Make the casting test record form(body,disc,cover)

4.2Bronze pieces inspection
4.2.1standard
Figure of valve plate seals
4.2.2Inspeciton project
ID&OD of seals for body and disc
4.2.3Inspection mode
Inspection for the first,Medium,final item from each bactch of products.
4.2.4 Inspection record
Fill the inspection record form of Bronze pieces

4.3Inspection of machine tools milling&drilling
4.3.1Test based on drawing outline of product
4.3.2scope of inspection

Part name of inspection&control for each series：see scheduleI，parts inspection control site:see schedule II

I:part name of inspection&control for each series

Item	pcs	Part name
Copper port valve	7	body、cover、disc、stem、stem nut、copper ring of the valve body、copper ring of the valve disc
taphole valve	5	Valve body、cover、disc、stem
Gas valve	5	Valve body、cover、disc、stem、stem nut
Butterfuly valve	5	Valve body、disc、platen、stem、seat（copper ring of the valve body）

II:parts inspection control site:see schedule

Item	No	Part name	Test tool
Valve body	1 2 3 4 5	The length of the structure of the two flanges About dovetail shape and size precision File width of two sealing surfaces after finishing turning Roughness of two sealing surface Through flange center distance from the chord	The caliper or box feet Templates and caliper calipers Roughness gauge block caliper
Valve disc	1 2 3	The rabbet size and dovetail shape Total thickness after finishing turning Roughness of sealed surface after finishing turning	Templates and caliper Caliper Roughness Gauge block
copper ring of the valve body	1	Rabbet size and dovetail shape	Caliper and templates
copper ring of the valve disc	1	Rabbet size and dovetail shape	Caliper and templates
Valve cover	1	Fill hole size	The smooth plug or caliper
Valve stem	1 2 3	Out diameter size T type roughness and size of the thread undercut diameter size with two arcs	Micrometer Roughness block gauge,T-thread ring or nut The caliper with half compasses
Valve nut	1	T type roughness and size of the thread	Roughness block gauge，T-thread plug gauge