Categories | Glass Tube Vials |
---|---|
Brand Name: | FOUR STARS |
Place of Origin: | CHINA |
MOQ: | 10000pcs |
Price: | usd0.03-0.05 |
Payment Terms: | L/C, T/T |
Supply Ability: | 1000000000pcs per year |
Delivery Time: | 10days-30days |
Packaging Details: | carton, 480*350*280mm; carton+pallet, 1200*1000*1500mm |
Product name: | Amber Glass Tube Vials Liquid Or Power Rubber Stoppera |
Material: | borosilicate glass |
Volume: | 2ml-50ml |
Usage: | liquid or power |
Sealing: | rubber stopper |
Sample: | free |
Amber Glass Tube Vials Liquid Or Power Rubber Stoppera
Procuct
1. Rotation speed: In the process of centrifugal pipe expansion,
the rotation speed and pipe diameter determine the centrifugal
force. When the pipe diameter is certain, the higher the rotation,
the greater the centrifugal force. Under the action of centrifugal
force, the larger the pipe diameter, the slower the rotation speed.
Therefore, the speed used in the pipe expansion process should be
based on the diameter of the glass tube
2. The wall thickness and the corresponding temperature are
determined. In the process of electrothermal softening and
air-pressure pipe expansion, the control of pipe diameter mainly
relies on a set of sizing devices that rotate synchronously with
the glass tube, which has a wider range of speed requirements.
The purpose of eliminating permanent stresses in the glass article and structural imbalances. Glass is a poor conductor of heat. After molding, the inner surface layer and the temperature difference in the cooling process there. When the inner surface layer solidification thick, but there is the temperature difference stress relaxation. When the surface layer cooled to room temperature, this temperature difference will appear. Inner continued cooling shrinkage, tensile stress hampered by the surface, while the surface compressive stress, is permanent. Size and distribution of permanent stresses caused by thermal processing of the product portions are not uniform, and therefore, it will affect the strength of the glass product, and even break by itself due to stress concentration. Annealing can eliminate harmful tension inside the glass and prevent new stress from being generated. During annealing, heat the glass product or keep it to the annealing temperature after thermoforming, so that the original stress is relaxed and eliminated, and then slowly cooled to below the strain temperature. After the glass has completely entered the state of rigid body, the temperature difference between the inner and outer layers only produces temporary stress . Because certain performance and functional glasses (such as optical glass, thermometer glass) are within the transition temperature range, the huge viscosity makes the structure particles move slowly, so that its performance cannot reach the equilibrium state consistent with the temperature, and it will balance slowly during use. Produce performance changes, therefore, it must be kept at the annealing temperature for sufficient time
Features
◆ GMP production environment
◆ Online statistical control
◆ meet ISO size and appearance AQL level
◆ detecting camera parameters and critical size defects in appearance key 77
◆ Each product can be traced to the time of delivery (DD-MM-YY), shift, machine and operator.
Belonging PYREX glass of borosilicate glass. Acid, water, corrosion resistance, thermal stability, chemical stability and good electrical properties, thus having chemical resistance, thermal shock resistance, good mechanical properties, temperature and other characteristics. Linear thermal expansion coefficient of borosilicate glass (also known as hard glass) was (3.3 ± 0.1) × 10-6 / K, so it was called "borosilicate glass 3.3." Is a special glass material having a low expansion, high temperature, high strength, high hardness, high light transmittance and high chemical stability. Because of their excellent properties, it is widely used in the field of solar energy, chemical, pharmaceutical packaging, electric light source. , Jewelry, and other industries.
principle
The purpose is to eliminate permanent stress and structural
imbalance in glass products. Glass is a poor thermal conductor.
After the product is formed, the surface layer and the inner layer
will have a temperature difference during the cooling process. When
the surface layer is solidified and the inner layer is viscous, the
temperature difference exists but the stress relaxation does not
exist. This temperature difference occurs when the surface layer is
cooled to room temperature. , The inner layer continues to cool
down and shrinks, which is hindered by the surface layer to produce
tensile stress, and at the same time, the surface layer produces
compressive stress, which is permanent. The size and distribution
of the permanent stress caused by the thermal process in each part
of the product will not be uniform, therefore, it will affect the
strength of the glass product, and even break by itself due to
stress concentration. Annealing can eliminate harmful tension
inside the glass and prevent new stress from being generated.
Since its establishment, the four-star company has always adhered
to the purpose of "dedicating itself to the development of
pharmaceutical industry and ensuring the safety of people's
medication", the business philosophy of "taking integrity as the
foundation, survival by quality and development by innovation", and
the quality policy of "scientific management, careful
manufacturing, high-quality service and excellence". All employees
work hard with one heart and one mind, In the fierce market
competition, we overcome difficulties, forge ahead bravely, and
continue to develop and grow.