Candy Glass Culture Tubes Liquid Medicine 2ml-50ml

Candy Glass Tube Vials Liquid Medicine 2ml-50ml

Procuct

The purpose is to eliminate permanent stress and structural imbalance in glass products. Glass is a poor conductor of heat. After forming, there is a temperature difference between the inner surface layer and the cooling process. When the inner surface layer solidifies thick, there is temperature difference stress relaxation. This temperature difference occurs when the surface layer cools to room temperature. Internal continuous cooling shrinkage is hindered by surface tensile stress, while surface compressive stress is permanent. The size and distribution of permanent stress produced by partial heat treatment of the product are uneven, which will affect the strength of glass products and even break by itself due to stress concentration. Annealing can eliminate harmful tension inside the glass and prevent new stress. During the annealing process, the glass products are heated or maintained at the annealing temperature after hot forming to relax and eliminate the original stress, and then slowly cooled below the strain temperature. When the glass completely enters the rigid state, the temperature difference between the inner and outer layers will only produce temporary stress. Because some performance and functional glasses (such as optical glass and thermometer glass) are within the transition temperature range, the huge viscosity makes the structural particles move slowly, so that their performance cannot reach the equilibrium state consistent with the temperature, and the balance is slow in the process of use. Performance changes occur, so it must be maintained at 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.

1, rotation speed: in a centrifuge tube expansion process, the rotational speed and diameter determined centrifugal force. When the diameter is constant, the higher the speed, the greater the centrifugal force. Under centrifugal force, the larger the diameter, the slower the speed. Thus, during the pipe expansion rate should be used as the basis to the diameter of the glass tube

2, the wall thickness is determined, and the corresponding temperature. Heating and softening the pressure in the pipe expansion process, the control diameter sizing device mainly depends on a set of synchronous rotation of the glass tube, it requires a wider range of speeds.

principle

The purpose is to eliminate permanent stress and structural imbalance in glass products. Glass is a poor heat conductor. After the product is formed, the temperature difference between the surface layer and the inner layer will occur during the cooling process. When the surface layer is solidified and the inner layer is viscous, there is a temperature difference, but there is no stress relaxation. When the surface layer cools to room temperature, this temperature difference will appear. The inner layer continues to cool and shrink, the surface layer prevents it from generating tensile stress, and the surface layer generates permanent compressive stress. Due to the uneven size and distribution of permanent stress generated by thermal process in each part of the product, it will affect the strength of glass products, and even break by itself due to stress concentration. Annealing can eliminate harmful tension inside the glass and prevent new stress.