Summary
JHR integrated precast refractory solution for section heating furnace has been fully applied, drastically shortening on-site construction and furnace drying cycle with stable lining quality, strongly supporting continuous section rolling production.
Content
The conventional cast-in-situ construction method previously adopted by Tangshan Zhengfeng Iron & Steel for its 12×24m walking beam section heating furnace featured obvious drawbacks. Complicated formwork erection and monolithic casting led to lengthy overall construction periods. After casting, the lining required long-term curing and staged drying which took up to 21 days of equipment downtime, restricting effective rolling hours and limiting full capacity utilization.Starting from April 2025, JHR delivered a full-set integrated refractory package for this section heating furnace, consisting of furnace roof precast blocks, furnace wall precast blocks and special low-cement castables for water beams, alongside full-process on-site technical guidance and masonry supervision. All precast components were fabricated and cured under standardized factory conditions before delivery for direct on-site assembly, while special castables were adopted for integral forming of water beam sections. Every batch underwent strict physical-chemical index, dimensional and high-temperature strength inspections upon arrival, with all parameters meeting operational and contractual technical standards. The customer’s on-site verification concluded the following advantages:
