For office workers, glass tableware heating due to long-term use is not easy to change color, not easy to produce odor become more lunch gens choice, but also from time to time due to the improper use, heating or collision explosion news appear from time to time. Product, experts say, the glass material, production process is different, use scope is also different, the correct understanding and use of glass tableware, will be more secure.
Cold and hot shock the resistance of heat-resistant glass
According to Beijing button le le trade co., LTD., product training department director da-peng huang, common glass on market roughly divided into three categories: common glass, toughened glass, heat-resistant glass. Ordinary glass composition is mainly sodium and calcium, and no special attributes, often used with early doors and Windows, etc, the existence of its biggest advantage is low cost, the price is cheap. Toughened glass is on the basis of common glass made a chemical or physical secondary steel processing, hardness is higher than common glass. Stress after damage, present obtuse particles, belongs to the safety glass, can safely guarantee personal safety, therefore, the wider use is often used in the glass partition of indoor and outdoor glass curtain wall and car windshield, etc. Heat-resistant glass is the most widely used in tableware kitchen utensils and appliances, and it is on the basis of common glass to join the heat resistance of boric acid, silicic acid composition, able to withstand a sharp temperature change, reason manufactured borosilicate, also known as boron silicate glass heat-resisting.
Da-peng huang said, with its button le le glass products of the company as an example, the use of temperature range between - 20 ℃ -- 400 ℃ in theory, able to withstand cold heat shock temperature changing between 120 ℃ to 150 ℃. Can be understood as the concept, the glass from the freezer (household refrigerator freezer temperature in B15 ℃ - 18 ℃) out, directly into the boiled water (under standard atmospheric pressure boiling water temperature is 100 ℃), the temperature at 120 ℃, so the heat resistant glass will not crack, not only can refrigeration freezing, can also be used for dishwasher, microwave and electric oven.
Toughened glass is easy to crack
Online often see some news about the glass tableware explosion, what kind of glass will produce explosion? Da-peng huang said, ordinary glass and toughened glass explosion probability is higher, but currently on the market of glass tableware making use of common glass is very rare, mostly use toughened glass and heat resistant glass.
Experts say, toughened glass is easy explosion, there are two main reasons: first, the production process of internal stress.
After toughened glass production, high temperature melting, direct cooling in a cold environment, in the process of production will produce large internal stress, meet external shocks, explosive spatter situation occurs. And heat-resistant glass melting process of different toughening glass after direct cooling, but slow cooling, in the slow cooling furnace can consume the internal stress of the glass, so the glass structure is more stable. While in use process will have a fracture, but won't produce the phenomenon that burst and fly to fry. Secondly, nickel sulfide, toughened glass containing impurities such impurities exists inside of the glass, and affect the stability of the glass structure. In everyday use, therefore, it is not recommended to put common glass and toughened glass vessels into the microwave, prone to safe hidden trouble.
The correct use of to secure them
Heat resistant glass can withstand cold and hot shock, why also some broken happens? Da-peng huang explained, glassware in the course of normal use if is shaken, internal produced to the naked eye can't see the tiny crack, influence the stability of the structure, the impact by external forces, is likely to produce rupture. So in daily use, in order to avoid rupture and other issues, attention should be paid to the following items:
1. When used in the fridge freezer, cheng fang volume should not be more than two-thirds of the container; Glassware in closed or semi-closed state, avoid holding liquid such as fruit juice, soup, milk, porridge, soup, etc. Because frozen food volume expansion, can also lead to product damage.
2. Microwave heating, be sure to open the lid. Although the lid for PP material (cold/heat resistant temperature B20 ℃ -- 120 ℃), sealing strip for silicone pad (cold/heat resistant temperature B40 ℃ to 200 ℃), but influenced by heat bilges cold shrink, cause the lid deformation problems, unable to open or influence sealing products.
3. Careful use of boiler, such as steamed fish, steamed custard, etc., the pressure of the boiler is easy to produce stress response and heat-resistant glass, glassware produce tiny cracks.
4. Avoid using steel wire ball lest produce scratches during cleaning. Avoid to use hard objects such as steel ladle tapping, lest cause damage.
