Knowledge

Advantages of Silicon Carbide in Coatings

1. High emissivity: High emissivity nano-silicon carbide is used as the main radiation powder, and other auxiliary materials are reasonably prepared. The normal emissivity of the coating reaches 0.92,

Analysis of Physical and Chemical Properties of Silicon Carbide

SiC is a natural superlattice and a typical homogeneous polytype. Since the difference in the stacking sequence of the Si and C diatomic layers leads to different crystal structures, SiC has more than

What is Silicon Carbide

Silicon carbide is generally divided into two types: black silicon carbide is made of quartz sand, petroleum coke and high-quality silica as the main raw materials, and is smelted at high temperature

How to add carburizer in double-stranded heavenly furnace

1. Surface carbonized method (similar with later period-micro-tuning method for electric furnace) In the thermal insulation furnace, the carbon raiser is added to the steel / iron surface, and the edd

Reasons and Measures of Graphite Floating in Ductile Iron

(1) Macroscopic features: Graphite floating often appears on the upper surface of the casting, the edge of the test block and the bottom of the riser, and a layer of black spots with clear boundaries

Carbonization rate and absorption rate

The carbon increase rate is the percentage of carbon increase per unit time, and the absorption rate is the ratio of the carbon in the carburizer to be absorbed by the molten iron. The carburizing spe

Standard GB/T3521-95 (5)

6. Determination method of sulfur 6.1 Method summary The sample is burned in an oxidizing atmosphere at 1200 ~ 1250 ℃, so that the sulfur, sulfide and sulfur in the sulfur are all escaped in the form

Standard GB/T3521-95 (4)

Fixed carbon determination method──indirect carbon determination method 5.1 Method summary The indirect carbon determination method is also called the combustion method, that is, after the volatile an

Standard GB/T3521-95 (3)

4 Ash determination method 4.1 Method summary The residue obtained after the sample is burned at a high temperature is the ash. 4.2 Instruments and materials 4.2.1 Balance: Sensitivity is 0.1mg and 0.