QUALITY CONTROL FLOW CHART FOR NdFeB

NO. PROCESS
NAME		 EQUIPMENT CONTROL POINT

CONTROL METHOD

 REMARKS
ITEMS FOR INSPECTION STANDARD FREQUENCY INSTRUMENT USED RECORD DOCUMENT IN-CHARGE
1 Purchase
Raw Material		    1、Name、Amount、Order No.
2、Composition、Appearance		 Purchase Document
Inspection Standard		 All
2Pcs Per Load		 Visual
ICP or Chamical Analyse		 Material Inspection Sheet Opreator
Technician		 QJ/AZA'08
QZ/AZA'03
2 Burden Electric Balance 1、Weight
2、Appearance		 Burden Production Guide All
All		 Electric Balance
Visual		 Burden Record  Opreator QJ/AZA'04
3 Melting Vacuum Melting
Furnace		 1、Composition
2、Appearance		 Inspection Standard 1Pcs/Furnace/week
All		 ICP or Chamical 
Visual		 Inspection Sheet
Quality Record		 Technician
Technician		 QZ/AZA'03
4 Smash &
Jet Milling		 Smash Machine
Jet Mill		 1、Powder Size
2、Oxygen Content		 Milling Production Guide 1Times/Day/Machine
Per Load		 FSSS
Oxygen Determinator		 Powder Size Record
Oxygen Record		 Technician
Technician		 QJ/AZA'07
Special Products
5 Pressing Press 1、Heigh
2、Press
3、Weight		 Pressing Production Guide 5% Per Load
All
All		 Callipers
Press Meter
Balance		 Produce process Sheet(3) Opreator QJ/AZA'06
6 Sintering &
Tempering		 Vacuum Furnace 1、Sintering time
2、Sintering Temperature		 Sintering & Tempering
Production Guide		 Per Furnace Vacuum Furnace Produce process Sheet(3)
Opreator		 QJ/AZA'09
7 Inspection B-H Curves 
Measurement
Magnetizer		 1、Br、jHc、(BH)max
2、Magnetic Property
3、De-Magnetiz Volt
4、Appearance		 Company Standard
Inspection Standard		 5Pcs Per Load
Å/AQL=0.65
Å/AQL=0.65
All		 B-H Curves Measurement
Gaussmeter or Fluxmeter 
De-Magnetizer
Visual		 Sintering Produce 
Test Sheet		 Inspection Q/AZA'01&02
QZ/AZA'03
8 Machining Grinder
Slicer
Electric Spark 
Machining
Magnetizer		 1、Dimentions
2、Appearance Tolerances
3、Orientation
4、Magnetic property
5、Appearance		 Inspection Standard Å/AQL=0.25
‰/AQL=0.25
‰/AQL=0.25
S-4/AQL=0.4
‰/AQL=0.25
 Callipers
Callipers
Magneted Material
Gaussmeter or Fluxmeter 
Visual		 Produce Inspection sheet Inspection QZ/AZA'03
9 Plating Plating Vat 1、After Plating Dimensions
2、Appearance
3、Plating Thickness		 Inspection Standard S-4/AQL=0.65
S-4/AQL=0.65
5Pcs Per Load		 Callipers
Visual
Thickness Determinator		 Produce Inspection sheet

Thickness Record		 Inspection
Technician		 QZ/AZA'03
10 Final
Inspection		 Magnetizer 1、Dimentions
2、Appearance Tolerances
3、Orientation
4、Magnetic property
5、Appearance		 Inspection Standard Å/AQL=0.65
S-4/AQL=0.1
S-4/AQL=0.4
S-4/AQL=0.65
All		 Callipers
Callipers
Magneted Material
Gaussmeter or Fluxmeter 
Visual		 Final Inspection Record Sheet Inspection QZ/AZA'03
11 Packing Packer 1、Quantity
2、Label		 Inspection Standard All
All
 Visual
Visual		 Enter Store Sheet Opreator QZ/AZA'03

　

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