A stone processing method for granite fired slabs. Ultra-thin granite slabs will be heated and arched during the processing of the fired surface, causing bursts. The damage rate is very high and the surface of the slab is not straight. It is exported, and the quality is very strict. So, what should I pay attention to about the fire processing technique of granite ultra-thin slab? Next, let's talk about it with the editor of FABULOUS Group.
pick the front and back
Why do you say this? Choose a thick noodle to burn, the flatness is better, the cut product will not swell in the middle, but the burning speed is slow, the heating time is long and it is easy to crack, the material cost of the fire will increase a lot, and the efficiency is also very high. low. In my opinion, based on the principle of less broken slabs, the hard-burning stone should be burned to a fixed thickness, and the hard-to-burn cut surface should be burnt.
Prevention first
Problems are often discovered when things are done or near the end. Sometimes it is too late to fix the situation. Therefore, we should continue to check whether there are cracks in the burned product from the beginning of the burning to the completion of the burning, and find the problem as soon as possible to solve the problem. The worker's skill is no problem, and the problem is the worker's mentality. The method of inspection is very simple: stand up the burned board, sprinkle some water on the back of the burnt surface, pay attention to the burnt surface not to be spilled, and then put it for a few minutes, if there are running water marks, it proves that the board has cracks If it's done, then we need to look for the problem, whether it's the stone problem, or the firepower or improper method.
Disperse heat cleverly
The bottleneck of overcoming the rupture of the ultra-thin plate is to disperse the heating degree of the plate as much as possible. When burning, put a few more slices to burn, do not burn a single slice, and jump to burn in a line (under normal circumstances, there are special stones that are not suitable for this Burn), the head and tail must be burned first and then the middle, so that the heat can be dissipated. Especially the hard-to-burn stones must be burned in this way, otherwise the top part will burn, and the final part will not burn.
The correct way of planing
Before starting to burn, find a wooden frame and lay a thick board as the bottom, sweep it and then spread the super thin board. After burning, the burning surface should be laid facing the burning surface, forcing the surface to straighten, and not too much.
choice of tools
Nowadays fireworkers mostly use large-sized welding torches, which have high firepower, large flames, and particularly fierce gas consumption; small-sized welding torches have low firepower and burn slowly when they touch hard-to-burn stones and can’t burn. The ideal tool is large. The torch is modified to burn clean and the flame is so big, if you are not used to it, it consumes gas and is fierce.
burn in the sink
If you are burning a one-centimeter board, the last way to crack it is to glue a pool with stone, then fill it with water, put a bottom (to be flat) in each corner of the pool, and put the board to be burned. It should be noted that the top surface must be surfaced. If the top surface is wet, it will burn more slowly and cannot be soaked in water. If possible, use circulating water to lower the water temperature.
Precautions for sand sawing ultra-thin board
The burning technology of sand sawing ultra-thin boards is more difficult than that of small-size boards. To reduce the breakage of sand-saw ultra-thin boards, they must stand up and burn and cannot be placed flat on the ground. However, few people can burn them while standing upright. If the burn is not good, it is also necessary to burn the surrounding area and then the middle. The distance between the grids should be longer, the joint should be tooth-like, and the flame should not be heavy. When placing the board, you must see whether the four points are all close, or it will crack.