6-Stage Quality Control for Fused Cast AZS Blocks

Incoming Material QC
Pre-Charge Re-Verification Every batch of raw material is quarantined on arrival and must pass chemical composition analysis before warehouse release. As a second safeguard, a re-test is performed immediately before the material is charged into the furnace. This double-check ensures that ZrO₂, Al₂O₃, and SiO₂ levels remain within our tight internal targets, eliminating the risk of batch-to-batch drift. → For your furnace: Consistent glass contact corrosion resistance, melt after melt.
Real-Time Melt & Cast Data Intelligence Melting defines the crystal structure and porosity of fused cast AZS. Our electric arc furnace is equipped with a proprietary digital monitoring system that captures and records critical parameters—temperature curve, power input, and cooling rate—across the entire melt and pour cycle, second by second. Any process deviation triggers an immediate alert, and the full data log is archived per heat. → For your furnace: Blocks with consistently dense microstructure and minimized internal voids, reducing the risk of early glass line attack.
Post-Casting Chemistry Verification
(AAS & XRF) As soon as a heat is poured, a representative sample is extracted and analyzed. Our lab technicians use atomic absorption spectrophotometry (AAS) and X-ray fluorescence (XRF) to measure key oxides precisely. Results are benchmarked against both the customer’s specification and our own stricter control limits. Only melts that pass this verification are cleared to move to the semi-finished stage. → For your shipment: A full chemical analysis certificate can be included, with traceability back to heat number and raw material lot.
In-Process Semi-Finished Blank Inspection Every AZB block blank undergoes a 100% in-line inspection of appearance, dimensional conformance, and surface condition before entering the grinding and machining stage. Cracks, excessive shrinkage, surface folds, and gross contamination are identified and marked. Defective pieces are rejected and scrapped on the spot. No out-of-spec blank is ever passed downstream. → For your order: Only geometrically sound, defect-free blanks are machined into finished blocks, safeguarding precision and delivery reliability.
Final Dimensional, Visual
Physical Property Check Before packaging, each finished AZS block is inspected in detail: Dimensional check: Calibrated instruments measure length, width, flatness, and joint gap tolerance. Visual check: Inspection for surface cracks, edge chipping, and glass contact face finish. Physical property check: Bulk density, apparent porosity, and cold crushing strength are verified against guaranteed values. A dimensional and physical property report is generated per block. → For your installation: Ready-to-assemble blocks with documented fit-up data.
Volumetric NDT
Ultrasonic Flaw Detection Before a block is wrapped, we perform 100% volumetric nondestructive testing using a handheld ultrasonic flaw detector. This technology scans the internal structure without damage, rapidly identifying hidden defects—internal cracks, pipe shrinkage, or entrapped bubbles—that cannot be seen from the surface. Blocks that fail our acceptance threshold are rejected immediately. → For your furnace campaign life: Internal soundness ensured; no hidden flaw that could grow into a premature failure under thermal cycling.
SERVICE
With a focus on technological innovation, the company delivers top-tier, durable products. Their expertise extends across the entire value chain, from product development to after-sales support. This comprehensive approach ensures the delivery of high-performance refractories for global industries.
Corporate Strength
With a focus on technological innovation, the company delivers top-tier, durable products. Their expertise extends across the entire value chain, from product development to after-sales support. This comprehensive approach ensures the delivery of high-performance refractories for global industries.
The company currently possesses two 168-meter high-temperature tunnel kilns, three bauxite sintering shaft kilns, and is equipped with over twenty fully automatic presses ranging from 300 to 1200 tons. It employs over 300 staff members, including 50 engineering and technical personnel
Production Capacity
The company currently possesses two 168-meter high-temperature tunnel kilns, three bauxite sintering shaft kilns, and is equipped with over twenty fully automatic presses ranging from 300 to 1200 tons. It employs over 300 staff members, including 50 engineering and technical personnel
Chaoyu Refractory Material Company boasts a research and development team comprised of senior industry experts, senior engineers, and young talents.
Technical
Chaoyu Refractory Material Company boasts a research and development team comprised of senior industry experts, senior engineers, and young talents.
The company provides first-class and durable refractory products. Its expertise spans the entire value chain, from product development to after-sales support. Modern production equipment and strict process control methods enable customers to use the products with peace of mind. This comprehensive approach ensures the provision of high-performance refractory materials for various industries worldwide.
Service
The company provides first-class and durable refractory products. Its expertise spans the entire value chain, from product development to after-sales support. Modern production equipment and strict process control methods enable customers to use the products with peace of mind. This comprehensive approach ensures the provision of high-performance refractory materials for various industries worldwide.
WhatsApp：+8613938501758
Phone：+8615517585977
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Email：info@azs-brick.com