QUALITY CONTROL
Can complete: equipment thermal field verification, continuous operation durability testing, process curve verification, customer customized process experiments
1. Establishment of Quality Management System
According to the standard:
Development of PLC Control System
Optimization of PID temperature control algorithm
Remote monitoring system
MES docking interface development
Develop documents:
Quality Manual
Program file
Standard Operating Procedure (SOP)
Inspection specifications (IQC/IPQC/FQC/OQC)
2. Quality Control Process
3. Detailed Quality Control Process
Sales+Technology+Production Tripartite Review
Clearly state the following:
Furnace type specifications
maximum temperature
temperature control accuracy
Atmosphere requirements (hydrogen/nitrogen/mixed gas)
load weight
degree of automation
Safety Standards (Exporting Countries)
Key Control Points: Preventing Rework
Structural Strength Calculation
Heating Power Matching
Insulation Material Selection
Control System Logic Review
Electrical Safety Review
Mandatory Procedures:
Three-Level Review of Design Drawings (Designer → Technical Supervisor → Chief Engineer)
FMEA Analysis (Failure Mode and Effects Analysis) for Key Equipment
Inspection Objects:
Furnace shell steel plate
Heating elements (heating wire/heating tube)
Refractory materials
Stainless steel plate
PLC control system
Frequency inverter
Temperature controller
Inspection Method
| Item | Inspection Content |
| Appearance | Deformation and rust check |
| Dimension | Thickness and specification check |
| Material | Material certificate verification |
| Electrical Components | Brand and model confirmation |
Non-conforming product isolation and handling;
Supplier quality rating management
Welding Quality Control
Weld Appearance
Weld Penetration Testing
Air Tightness Testing
Furnace Assembly Control
Insulation Layer Thickness
Heating Element Arrangement
Furnace Chamber Coaxiality
Electrical System Control
Wiring Specifications
Grounding Resistance Testing
Insulation Resistance Testing
PLC Logic Simulation Operation
👉 Signature Confirmation for Each Process
👉 Video Recording of Key Processes (Recommended for Export Equipment)
Empty furnace heating test
Full load test
Temperature control accuracy test
Furnace temperature uniformity test (±5℃ or customer requirements)
Alarm system test
Air tightness test
48-hour continuous operation test
👉 Issuance of a "Factory Inspection Report"
Visual inspection
Paint thickness inspection
Nameplate verification
Random document list confirmation
Packaging rust prevention treatment
👉 Customer video acceptance (Recommended for export)
Provide installation instructions
Remote commissioning support
Operating data recording
Customer satisfaction follow-up
Closed-loop handling of quality issues
4. Key points of quality risk control
|
Risk Points |
Control Methods |
|
Uneven Temperature |
Add Multi-Point Thermocouple Detection |
|
Air Leakage |
Weld Seam Air Tightness Test |
|
Short Heating Element Lifespan |
Select High-Quality Materials |
|
Control System Failure |
Uses well-known brand PLCs |
|
Export Returns |
Enhanced Debugging and Testing |
5. Suggestions for Quality Data Management
Establish MES system
Establish a record file for key equipment
Establish an after-sales fault database
Regular quality analysis meetings
6. Upgrade suggestion
Passed ISO9001 certification
Through CE
Create a third-party testing report
Key equipment video archiving
Provide FAT (Factory Acceptance Test)
TESTING EQUIPMENT
Can complete: equipment thermal field verification, continuous operation durability testing, process curve verification, customer customized process experiments
CERTIFICATIONS
Can complete: equipment thermal field verification, continuous operation durability testing, process curve verification, customer customized process experiments
Certificate Name
If you are interested in any of our products or would like to make your customized order, please feel free to contact us. We are looking forward to establish successful business relations with you.
