Composite metal ceramic powder, furnace roller coated with same and preparation method thereof
A technology of ceramic powder and composite metal, which is applied in the direction of metal material coating process, coating, molten spraying, etc., can solve the problems such as the decrease of the proportion of ceramic components, the increase of coating porosity, and the deterioration of adhesion, etc., to achieve Improve the service life, increase the heat-resistant temperature range, and prevent peeling effect
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Embodiment 1
[0048] (1) Preparation of composite cermet powder
[0049] Weigh in turn 3500 grams of MCrAlY powder, 4500 grams of chromium carbide powder, and 2000 grams of sodium hexatitanate whisker powder. Wherein, M in MCrAlY is nickel, and the specific general formula is NiCrAlY, and Ni, Cr, Al and Y account for 56.8%, 30%, 12% and 1.2% by weight of NiCrAlY respectively.
[0050] The composite cermet powder of the present invention is prepared by conventional wet ball milling and spray granulation methods.
[0051] The concrete preparation method of composite cermet powder is as follows:
[0052] (1) After loading an appropriate amount of ceramic ball milling media into the ball mill, add an appropriate amount of water;
[0053] (2) Add the above-mentioned weighed raw materials;
[0054] (3) Rotate the ball mill to mix the powder evenly;
[0055] (4) Add an appropriate amount of binder and necessary defoamer;
[0056] (5) Rotating the ball mill to mix all the materials evenly to o...
Embodiment 2
[0066] (1) Preparation of composite cermet powder
[0067] Weigh in turn 7000 grams of MCrAlY powder, 2500 grams of chromium carbide powder, and 500 grams of potassium hexatitanate whisker powder. Wherein, M in MCrAlY is cobalt, and the specific general formula is CoCrAlY. Co, Cr, Al and Y account for 80.8%, 15%, 4% and 0.2% by weight of CoCrAlY respectively.
[0068] The method described in Example 1 was used to prepare the composite cermet powder of the present invention.
[0069] (2) Preparation of furnace rollers
[0070] (1) Use heating, sandblasting and compressed air cleaning methods to roughen and clean the surface of the workpiece substrate in the furnace.
[0071] (2) Install the furnace roller to be sprayed on the turntable, set the appropriate rotation speed, spray gun moving speed and spraying distance according to the diameter of the roller surface, and spray the high-temperature resistant metal powder MCrAlY by high-speed oxygen flame spraying method, layer b...
Embodiment 3
[0076] (1) Preparation of composite cermet powder
[0077] Sequentially weigh 5430 grams of MCrAlTaY powder, 3370 grams of chromium carbide powder, and 1200 grams of sodium hexatitanate whisker powder. Among them, M in MCrAlTaY is a nickel-cobalt alloy, and the specific general formula is CoNiCrAlTaY, wherein Co, Ni, Cr, Al, Ta and Y account for 56.2%, 12%, 21%, 6.4%, and 4% of the weight content of CoNiCrAlTaY respectively and 0.4%.
[0078] The method described in Example 1 was used to prepare the composite cermet powder of the present invention.
[0079] (2) Preparation of furnace rollers
[0080] (1) Use heating, sandblasting and compressed air cleaning methods to roughen and clean the surface of the workpiece substrate in the furnace.
[0081] (2) First install the workpiece base body of the roller in the furnace on the turntable, set the appropriate rotational speed, spray gun moving speed and spraying distance according to the diameter of the roller surface, and then...
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