Quality Control Plan
Date Originated：
■Prototype RPre-Launch □Production
Control Plan No.:
Part Name/Description: Hydraulic Rubber Hose Assembly
Customer Approval Date：
Supplier Approval Date：
Supplier：Hangzhou Haikuo
Approved by：
Prepared by：
Item
Operation/Description
Machine, Device, Tools
Characteristic
Methods
Reaction Plan
Process
Product/process
Evaluation/Measurement
sample
Control Method
Specification/Tolerance
size
Freq.
1
Incoming Material Inspction
Appearance
No damage, pollution, moisture
Visual
once
per lot
Inspector sampling and checking the warranty book
Reject,segregate and notify the purchasing department
composition
Subject to the warranty
2
Rubber raw material storage
Pallet/forklift
Identification
Clarity
100%
Warehouse clerk self-inspection
Rework,adjustment
environment
Ventilation, drying, avoid direct sunlight
3
Ingredient
Electronic scales
Recipe sheet
control by computer
continuous
Computer error prevention system
Adjust,inform the production department
Weighing
Rubber refining plan
Digital display, voice prompts
4
Rubber mixing
Mixing machine
Temperature
specification
Computer program setting
Weight
Time
making rubber sheet
rubber sheet making machine
Times
Process work instructions
worker self-inspection
gap
Dial
5
Rubber sheet inspection
Physical properties
Hardness
Hardness Tester
Inspector spot-check
Tensile Strength
Rubber tensile Machine
Elongation rate
6
inner tube extrusion
Extrusion Machine
No damage, oil, bubble
Rework, adjust，inform the production department
5/8" (φ15.8mm ±0.5mm）
caliper
7
Steel Wire braid
Brading Machine
No braid missing,
8
outer tube extrusion
φ23.8 mm ±0.5mm
9
Printing
Print machine
clear and error-free
10
rap the cloth
Cloth wrapping machine
11
coil hose
Coil rack
keep clean
12
vulcanize
vulcanizer
Standard request
13
Take off wrapped cloth
Unwrapping machine
14
core-pulling
Water press machine
High pressure
Core- pilling out
15
Pressure test
Pressure machine
2 times than W.P
No damage, no leakage
16
cutting
cutting machine
Edge smooth
Rework, adjust
≥8' (2.44m)
tapeline
17
crimping connectors
crimping machine
no gap, crack, leaking
crimping standard
18
Final Inspection
Finished product inspection work instructions
Caliper/Tapeline
Rejection, segregation, notification of quality department
19
Burst pressure
4 times than B.P
20
Packing
packing machine
packing qty
product packing list
packing worker self-inspection
Isolation, rework
method
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