144.5KW Plate Vulcanizing Machine / Metro Barrier Door Rubber Seal Molding Machine

1200 Ton Clamp Force Metro Barrier Door Rubber Seal Molding Machine

After the vulcanizer is clamped to the bottom, the vulcanization process begins. First, the water will be turned on once, switched to secondary water, and then the formal vulcanization process. The on-site control system of the vulcanizer transfers the vulcanization machine's initial vulcanization signal to the vulcanizer process control station in the central control room.

The gas source of the regulating valve of the external pressure steam starting film of the vulcanizing agent is turned on, and the external steam enters the steam chamber of the vulcanizer. At this time, the external temperature measuring element transmits the temperature signal measured in the steam chamber to the field control cabinet as a resistance value. The intelligent digital display device converts this resistance value into a current signal, and then transmits the current signal through the signal transmission cable to the process control station in the central control room.

The control station will transmit the relevant signals to the upper monitoring machine through the network card, so that the data can be observed and recorded. At the same time, the control station analyzes the signal detected during the vulcanization process and converts it into a current signal to the Liu Huade site. The electric valve positioner of the vulcanizer automatically controls the opening of the pneumatic diaphragm regulating valve according to the transmitted current signal, thereby controlling the steam quantity of the vulcanized steam, and realizing the automatic control and adjustment of the external pressure temperature of the vulcanization process.

In general, antistatic agents are compounded with pigments and other auxiliaries in an internal mixer or extruder. Technically, a pure antistatic agent, such as an ethoxylated alkylamine, has another advantage, that is, it melts during liquid injection molding and then acts as a pigment masterbatch dispersant. The antistatic masterbatch can be added directly to the finishing equipment. The effect of the internal antistatic agent is closely related to the production conditions of the finished product. For example, the antistatic function of an injection molded article depends on the temperature of the mold. Generally, when the temperature of the mold is low, the antistatic agent is relocated quickly, and then the antistatic function is improved.

• There are two test methods for evaluating the action of antistatic agents: external resistance (rate) method and electrostatic decay method; both methods are widely used.
• According to the definition of Federal Test Method 4046, electrostatic decay refers to the rate of discharge of induced charge. A sample (typically a thin plate or film) is placed between the two electrodes with a distance of a few millimeters from the surface of the sample. One electrode is connected to the power source, and the other electrode is connected to the ammeter and the recorder. The electric field change caused by the charge induced by one electrode on the outer surface of the sample is measured by the other electrode. Antistatic samples will exhibit decay of the induced charge. The decay half-life (in seconds) is the time required for the charge to decay by half its initial value.