Glass is our daily life often contact and use of goods, from glass cups such as household goods to glass curtain wall a class of building decoration materials, glass for the development of world civilisation has made a very great contribution. For example, we often hear about the glassware industry, often used in the manufacture of glassware industry, outstanding performance. Next, we will briefly introduce the selection of glassware what reference standards, explaining what problems often occur in glassware.
First, what is the reference standard for selecting glassware?
1. Whiteness: no significant colour on the bright material glass requirements.
2. Bubbles: a certain width, a certain length of the bubble is allowed to exist in a certain number, and can be pierced with a steel needle bubble is not allowed to exist.
3. Transparent pimples: refers to the melting of uneven glass body, the capacity of less than 142L glassware, the length of not more than 1.0mm no more than one; capacity of 142 ~ 284mL glassware, the length of not more than 1.5mm no more than one, 1/3 of the transparency of the body of the glassware pimples are not allowed to exist.
4. Miscellaneous grains: refers to opaque granular debris, length not greater than 0.5mm, not more than one.
5. Cup mouth roundness: refers to the mouth of the cup is not round, its diameter difference is not greater than 0.7 ~ 1.0mm.6, stripes: distance 300mm visually apparent is not allowed.
7. Cup height deviation (cup height skew): a cup cup height difference is not greater than 1.0 ~ 1.5mm.
8. Cup thickness difference: no more than 0.5 ~ 0.8mm.
9. Shear marks: refers to stripes or centipede-like shear marks, the length is not greater than 20~25mm, the width is not greater than 2.0mm not more than 1, more than the bottom of the cup, or whitish and shiny, more than 3mm is not allowed.
10. Moulding: the cup body is a record pattern of hidden marks, flat obvious is not allowed.
11. The cup body suction deflated: refers to the body of the cup is uneven, not allowed to be obvious in plain view.
12. Rubbing hair and scuffs: rubbing hair refers to the glassware and glass diameter of the friction, in the body of the cup to leave traces of loss of luster, flat look obvious is not allowed. Scratch refers to the mutual collision between the glassware, leaving scars on the surface of the cup body, shiny is not allowed.
Second, what problems often appear in glassware
The three major shortcomings of glass (bubbles, streaks, stones) will generally have, control the proportion of shortcomings on it, the common problems are: touching the glass, the glass body, the glass body, the glass body, the glass body, the glass body, the glass body, the glass body, the glass body.
Common problems are: touching the mouth, deformation, scratches, the bottom is not stable, self-explosion, cracks, bevel, oxidation spots, mould rust, and so on.
In addition is the product shape, design and special technology caused by some shortcomings, some acceptable, some can be controlled, and some can be avoided, such as put the aluminium shell wax candlestick must be put in the wax place to match the wax test, if the mouth is cut and polished process must be chamfered on the inner prongs of the processing, to prevent the user in the process of putting the wax cut hand, the size of the mouth should be in strict accordance with the design standards to avoid the mouth is too small to facilitate the lighting of candles. The mouth size should be strictly in accordance with the design standards, to avoid the mouth is too small to facilitate the operation of the candle ignition and so on, depending on the situation.
As the general daily glassware are non-standard parts, so now there is no specific national or industry standards issued, physical and chemical properties are basically reference to some of the countries related to safety and environmental protection laws or regulations to the implementation of, so the quality depends on the purchasing staff or the industry.
Therefore, the quality depends on the purchaser or the inspector's understanding of the product to determine the quality of the product.
Pharmaceutical glassware and chemical instrument glassware have the national standard and the standard to refer to, strict implementation should not be any big quality problems.
Glassware
Glassware is made of glass. Glass art in China has maintained a continuous history of development for thousands of years. During the Wanli period of the Ming Dynasty, Shandong Boshan's material production was very prosperous, the late Ming and early Qing dynasty into Beijing, in the early Qing dynasty Kangxi, Yongzheng, Qianlong period, glaze production was once revived, the Qing dynasty Kangxi thirty-five years, Beijing appeared a large-scale "glaze factory", the production of the palace to enjoy the material ware. During this period, the varieties of glassware colourful, modelling and decoration has also changed. Which material imitation jade, jadeite, onyx, coral, etc. made of bottles, bowls, snuff bottles, birds and animals, etc., colour realistic, with a unique style and flavor.
