GB/T 25155-2026Daylight presses (English PDF)

5 Technical Requirements

5.1 The flat vulcanizing machine shall meet all the requirements of this document and be manufactured in accordance with the drawings and technical documents approved through the prescribed procedures.

5.2 The hydraulic system shall meet the following requirements.

a) The hydraulic system conforms to the requirements of GB/T 3766.

b) Pressure drop in the hydraulic system when the working fluid reaches the working pressure. 1) For flat vulcanizing machines with a clamping force less than or equal to 2.5MN, a holding time greater than or equal to 10 minutes, and a pressure drop not exceeding the working pressure. 10% of the pressure; 2) For flat vulcanizing machines with a clamping force greater than 2.5MN, the holding time should be greater than or equal to 60 minutes, and the pressure drop should not exceed the working pressure. 10%.

c) When the pressure drop of the hydraulic system exceeds the specified value, the hydraulic system has the function of automatically replenishing the pressure to the working pressure.

5.3 The hydraulic system and hot plate of the flat vulcanizing machine shall undergo a pressure resistance test and there shall be no external leakage.

5.4 The maximum operating temperature that the hot plate should be able to reach.

a) Steam heating at 180°C;

b) Heat the oil to.200°C;

c) Electric heating is at 230°C;

d) Electromagnetic induction heating at 250°C.

5.5 Temperature difference at the working surface of the hot plate when the temperature reaches a stable state.

a) Steam heating, oil heating, and electromagnetic induction heating. should be within ±1.5°C;

b) Electric heating. When the hot plate size is greater than or equal to 1000mm × 1000mm, the temperature should be less than or equal to ±5°C; when the hot plate size is less than... For 1000mm×1000mm, the temperature should be within ±3°C.

6 Safety Requirements

The safety requirements for flat vulcanizing machines shall comply with the provisions of GB/T 25432.

10 Marking, Packaging, Transportation and Storage

10.1 Each product shall have a product label affixed to a conspicuous location. The size and technical requirements of the label shall comply with the provisions of GB/T 13306. The content of the sign should include.

---Manufacturer's name and trademark;

---Product name and model specifications;

---Main technical parameters of the product;

---Execution standard number;

--- Manufacturing date and product number.

10.2 The product instruction manual shall comply with the provisions of GB/T 9969 and GB/T 25432.

10.3 After passing the no-load operation test or load operation test, before delivery for packaging, transportation, or storage, the water and... Drain the oil from the reducer.

10.4 Product packaging shall comply with the provisions of GB/T 13384.

10.5 The graphic symbols used for packaging and storage of products shall comply with the provisions of GB/T 191.

10.6 The transportation of products shall comply with the provisions of GB/T 6388.

10.7 The product should be stored in a well-ventilated, dry place free from fire sources and corrosive gases. When stored outdoors, rain protection measures should be taken.