Glass Coffee Pot Manufacturers

Q1: How to ensure thermal stability of the core material of glass coffee pot?
A: Yangzhou New Coordinate uses high borosilicate 3.3 glass (expansion coefficient ≈ 3.3×10⁻⁶/K), whose molecular structure can withstand a sudden temperature difference from -30℃ to 150℃. For example, our heat resistance test requires that the pot body be dropped to 0℃ ice water environment in a 220℃ oven, and cycle 50 times without cracks - this far exceeds the national standard GB 4806.5 for hot and cold shock requirements of tableware glass.

Q2: How to avoid leakage risks when combining the pot body with metal parts?
A: The key lies in the industrial design of the sealing system. We optimize the compression ratio of the silicone gasket through finite element analysis (controlled in the range of 18%-22%), and cooperate with the sealing integrity test: inject 0.25MPa air pressure into the assembly and maintain pressure for 12 hours, and the leakage rate must be <0.05%. Yangzhou New Coordinate's patented buckle structure achieves triple physical locking.

Q3: Why is chemical stability testing related to drinking safety?
A: According to ISO 6486, we use 4% acetic acid solution to soak for 24 hours at 80℃ to detect the migration of heavy metals (lead and cadmium dissolution limit ≤0.5mg/L). The inherent advantage of glass material is its non-porous structure, but Yangzhou New Coordinate still adds HF acid mist test to ensure that the corrosion resistance of the surface treatment layer meets the standard.

Q4: How does the impact test simulate the actual use scenario?
A: Our laboratory uses the upgraded version of ASTM C162 standard: a 1kg steel ball is freely dropped from a height of 80cm to impact the thinnest point of the pot body (usually the transition zone of the pot neck), and no structural fragmentation is required. At the same time, the bottom of the pot is subjected to a continuous impact test of 300g steel ball 30cm through a falling ball impact instrument, and the crack extension length must be ≤5mm.

Q5: What is the technical relationship between glass transparency and function?
A: Yangzhou New Coordinate's transparency test uses the CIE LAB color difference system (ΔE≤1.5), which is not only about aesthetics - when ΔE＞2, the human eye can discern color difference, and it directly affects the user's ability to observe the state of coffee extraction. We control the Fe₂O₃ content to less than 0.03% through the melting process, ensuring the transmittance ≥91.5% from the source.

Q6: How does the pressure test ensure heating safety?

A: Simulating the local overheating condition of the induction cooker, we apply 2.5 times the working pressure (about 0.45MPa) at a specific point and maintain it for 30 minutes. This verifies the stability of the glass molecular chain under thermal stress. Yangzhou New Coordinate's products can withstand more than 10,000 heating cycles, which is much higher than the industry average of 3,000 times.

Q7: Why does dimensional tolerance control affect the user experience?

A: Through laser 3D scanning comparison, the diameter error of the pot mouth must be controlled within ±0.15mm - this ensures compatibility with mainstream coffee machine filter baskets. The weight test of Yangzhou New Coordinate is accurate to ±5g, which avoids water flow disturbance during extraction due to unbalanced weight, which directly affects the quality of coffee oil production.