Application of Silicon Carbide in Tombstone Carving Industry
Black silicon carbide
The application of silicon carbide in tombstone carving is mainly reflected in two aspects: material properties and processing technology. The specific applications are as follows:
1. Material selection and type
Abrasive for sandblasting and etching
Black silicon carbide is suitable for sandblasting process on the surface of tombstones due to its high hardness (Mohs hardness 9.2) and uniform particle distribution. It can accurately etch hard stones such as granite and marble to form frosted texture patterns.
Green silicon carbide (mesh size such as 24#, 30#, etc.), Mohs hardness 9.4, is also used for cemented carbide sandblasting, suitable for high-precision carving needs.
Spray-on board material
Silicon carbide spray-on board is used for tombstone surface engraving. Its high density (density ≥1800kg/mm2) and impact resistance can ensure clear and stable marks, avoiding the risk of breakage caused by parallel marks.
2. Key points of process technology
Sandblasting process parameters
The depth of sandblasting is related to the demand for tombstone engraving. Shallow engraving requires high-purity silicon carbide (such as grade A black silicon carbide, SiC content ≥ 98%) to improve etching efficiency and pattern three-dimensionality.
Sandblasting equipment needs to match the fluidity of silicon carbide particles to prevent nozzle clogging and reduce material loss through recycling.
Pretreatment of inkjet printing plate
Before inkjet printing, the silicon carbide plate needs to be pre-burned to improve hardness and density and reduce edge collapse during engraving.
Surface cleanliness and flatness directly affect the inkjet effect, and polishing or grinding is required to ensure that the substrate is free of impurities.
3. Dosage and cost control
The amount of silicon carbide used is positively correlated with the engraving area and depth. Shallow engraving on tombstones usually requires 1-2kg/m2.
Although the unit price of high-purity silicon carbide (such as grade A) is relatively high, the recycling rate is high and the overall cost is controllable.
4. Summary of technical advantages
High precision: The uniformity (FEPA standard) and hardness advantages of silicon carbide particles can achieve micron-level engraving accuracy.
Durability: Wear resistance and high temperature resistance extend the tool life and are suitable for large-scale tombstone processing.
Environmental protection: Silicon carbide can be recycled, reducing waste generation, and is in line with the trend of green processing.
Through the above applications, silicon carbide takes into account both artistic expression and the efficiency requirements of industrial production in tombstone engraving.
Haixu Abrasive Silicon Carbide Factory produces black silicon carbide and green silicon carbide. The regular production particle sizes are as follows
Black Silicon Carbide
FEPA F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200
JIS #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000
P : P12 P16 P20 P24 P30 P36 P40 P50 P60 P80 P100 P120 P150 P180 P220 P240 P280 P320 P360 P400 P500 P600 P800 P1000 P1200 P1500 P2000 P2500 P3000 P4000 P5000
Green Silicon Carbide
FEPA F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000
JIS #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000