Amidst the splashing iron flowers in the steel plant, the flickering flames in the ceramic kiln, and the steaming mist in the chemical plant, a century long battle against high temperatures has never ceased. Behind the heavy protective clothing of the workers, there is a black ceramic material silently rewriting the survival rules of traditional industry – silicon carbide ceramics. This seemingly ordinary material is becoming the “anchor” of high-temperature workshops.
1、 The ‘millennium armor’ in the steelmaking furnace
Entering the casting workshop, molten iron at 1600 ℃ rolls in the furnace, and traditional refractory bricks often have to be “retired” within six months. The composite lining made of silicon carbide ceramics is like putting the mythical “dragon scales” on the furnace. Our customers have provided genuine feedback: ‘This dark ceramic layer has withstood the erosion of molten steel for three years, and is much stronger than old refractory bricks.’ This anti-corrosion property has extended the maintenance cycle from once a month to once a year, significantly reducing production downtime losses.
2、 The ‘Phoenix Tray’ in Ceramic Kilns
In the blue and white porcelain kilns in Jingdezhen, the kiln furniture that carries the blanks is undergoing a test at 1300 ℃. Traditional alumina supports often crack due to thermal shock, while silicon carbide ceramic kiln furniture is like a phoenix reborn from the ashes, standing upright in rapid cooling and heating. A inheritor of intangible cultural heritage displayed a bracket with a smooth and new surface: “In the past, when firing ten kilns, we had to replace a batch of pads, but now this batch has been in service for two years, and the kiln transformation effect has become more stable. The unique thermal conductivity has increased the firing yield by 15%.
3、 The ‘anti-corrosion shield’ of chemical plants
The dual attack of corrosive gases and high temperatures was once a nightmare for chemical plant reactors. After our client introduced silicon carbide ceramic lining into the reaction tower, the equipment lifespan was extended from 2 years to 8 years. This layer of black ‘skin’ not only withstands high temperatures of 500 ℃, but also cannot be bitten by strong acids. This dual protection achieves a qualitative leap in equipment safety in hazardous environments.
4、 The “permanent gear” of the heat treatment line
On the heat treatment line of automotive parts, the conveyor roller is subjected to long-term quenching and high-temperature roasting. After switching to silicon carbide ceramic rollers, a production line of a certain enterprise set a record of continuous operation for 180 days. Customer feedback states: “Previously, metal rollers softened when exposed to heat, but now these black ceramic rollers are like ‘high-temperature perpetual motion machines’. The stable mechanical properties greatly improve the uniformity of product heat treatment.
Even in cutting-edge fields such as aerospace engine nozzles and new energy vehicle electronic control systems, this traditional industrial “black technology” is emerging. From the bronze furnaces of the Warring States period to smart factories, from the clay bricks in the hands of kiln workers to the precision components in spacecraft, silicon carbide ceramics have always been in the collision of high temperature and civilization, demonstrating the inheritance and breakthrough of Chinese intelligent manufacturing.
Good industrial materials should be like the craftsmanship of craftsmen – able to withstand high temperatures of thousands of degrees and preserve a hundred years of inheritance. This may be the deepest inspiration that silicon carbide ceramics bring to traditional industries.
Post time: Apr-21-2025