Page 61 - 《橡塑技术与装备》英文版2026年3期

THEORY AND RESEARCH

Table 6 Process route and energy consumption of electric heating vulcanization for 51-inch semi-steel vulcanizing
machine
Operation Step Duration Energy Consumption Factory Configuration
Serial Number Input power Energy consumption
Definition Description Value Unit Heat conversion value / kW value/(kw h)
.
Upper and lower hot plates -
Hot mold 90 min upper and lower templates, 34 51
Prepare mold sleeves - pattern blocks
0 External heating 10 min Electric energy - Internal 5 0.83
with nitrogen energy of nitrogen
Vulcanization 15.33 min \ \ 2.72
cycle
Electric heating inside the
capsule - internal heating of 3 0.02
Primary/ the capsule 1.In the preparation
1 Stereotype Secondary 20 s External temperature stage, it is not included
setting compensation activation 34 0.19 in the vulcanization
Nitrogen external heating for 0 0 cycle
insulation, not activated
High-pressure External temperature 2.During the
and high- compensation starts for 1 34 0.57 vulcanization stage
3 minutes minute
2 before proper temperature 3 min using an external heating
nitrogen gas
plate, the workshop can
vulcanization Electric heat within the
enters the capsule - Heat within the 3 0.15 proceed in batches
capsule capsule
External temperature 3.External heating
compensation starts for 1 34 0.57 with nitrogen, initiated
minute after the hot molding
Electric heat within the process is completed or
Positive Sulfidation is capsule - Heat within the 3 0.25 20 minutes before the
3 5 min vulcanization process
sulfurization proceeding capsule begins
The external heating
system using nitrogen has 0 0 4.The working step time
been initiated, but it is not is adjusted according to
considered for the time being the actual process
Heat with nitrogen for 5
minutes, and maintain the
temperature once it reaches 5 0.42
the desired level
Thermal
4 vulcanization insulation 7 min External temperature
vulcanization compensation starts for 1 34 0.57
minute
Electric heat within the
capsule - Heat within the 3 0
capsule
Table 7 Cost comparison between electric heating and steam heating (annual production of 1 million sets)
Steam heating Electric heating
Project Unit Comparison ( ① - ② )/ ① Remarks
curing press ① curing press ②
Energy consumption cost 10,000 yuan 51.80% 1400 674.96
Steam cost 10,000 yuan \ 360 \
Single tire consumption kg \ 18 \
Unit price of steam Yuan/kg \ 0.2 \
Nitrogen cost 10,000 yuan 44.40% 720 400
Single tire consumption kg \ 18 10 Nitrogen recycling
Unit price of nitrogen Yuan/kg \ 0.4 0.4
Electricity cost 10,000 yuan \ \ 184.96
.
Power consumption per tire Kw h \ \ 2.72
.
Electricity unit price Yuan/Kw h \ \ 0.68
Spare parts consumption 10,000 yuan 71.90% 320 90 Valve/pipeline maintenance
manufacturers, leading both domestically and internationally in structure and temperature control, it has continuously explored
steam heating. It has also made significant progress in electric and grown, and has been applied in factory practice. A brief
heating technology, with the technology becoming increasingly introduction is provided below.
refined and mature. Especially in terms of electric heating 4.1 Steam thermal valve group structure

Vol.52，2026 ·15·