What are the advantages to make stone crafts pultrusion?

The pultrusion molding process of stone crafts is through the continuous traction of the traction device, so that the reinforcing materials such as untwisted stone art fiber roving and felt on the creel are impregnated with glue, and then solidified in the mold after passing through a heating mold with a fixed cross-sectional shape. Forming, and an automatic production process that realizes continuous mold release. For stone art with fixed cross-sectional size, the pultrusion process has obvious advantages. First of all, since the pultrusion process is an automated continuous production process, compared with other stone art production processes, the pultrusion process has high production efficiency; secondly, the raw material utilization rate of pultrusion products is also high, generally above 95%. . In addition, the cost of pultruded products is low, the performance is excellent, the quality is stable, and the appearance is beautiful. Due to these advantages of the pultrusion process, its products can replace metal, plastic, wood, ceramics and other products, and are widely used in chemical, petroleum, construction, electric power, transportation, municipal engineering and other fields.

Under the action of the traction force of the pultrusion equipment, the reinforced material of stone crafts is fully impregnated with the glue in the dipping tank, and is reasonably guided by a series of preformed templates to get a preliminary shape, and finally enters the heated metal mold. The effect of the high temperature of the mold Under the reaction and curing, continuous stone art profiles with smooth surface, stable size and high strength can be obtained.
The main equipment for stone crafts to realize the pultrusion process is the pultrusion machine, which can be roughly divided into two types: horizontal and vertical. In general, the horizontal pultrusion machine has a relatively simple structure and is easy to operate, and has no special requirements for the structure of the production workshop. Moreover, the horizontal pultrusion machine can adopt various curing molding methods (such as thermal molding method, high-frequency heating curing, etc.), so it is widely used in the pultrusion industry. The various processes of the vertical pultrusion machine are arranged in the vertical direction, and are mainly used to manufacture hollow profiles. This is because the mandrel can only be supported at one end when producing hollow profiles, and the other end is a free unsupported end, so the vertical pultrusion machine does not The wall thickness of the pultruded product will be uneven due to the sagging of the mandrel cantilever; this kind of pultrusion machine is no longer used due to its large limitations and the single product produced. Whether it is a horizontal or vertical pultrusion machine, they are mainly composed of five parts: yarn feeding device, dipping device, forming mold and curing device, traction device, cutting device, and their corresponding processes are yarn arrangement, impregnation, Molding and curing, pulling, cutting.