A kind of preparation method of carbide reinforced multi-layer plate for chute
A technology of carbide and multi-layer boards, which is applied in the field of preparation of carbide-reinforced multi-layer boards, and can solve problems such as poor wear resistance
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[0025] A kind of preparation method of the carbide-reinforced multi-layer plate used in the chute provided by the present invention, the specific operation steps are as follows:
[0026] Step 1, purifying the steel laminate with a thickness of 4-10 mm after sandblasting to obtain a clean steel laminate;
[0027] Step 2, weigh the following materials by mass percentage: iron powder 10%-20%, graphite powder 4-13%, the rest is one or two kinds of mixture of tungsten iron powder or titanium iron powder, the mass percentage of the above components The sum is 100%;
[0028] Step 3: Use a planetary high-energy ball mill for ball milling and mixing the materials weighed in step 2. The speed of the ball mill is 300-400r / min, the ball-to-material ratio is 10-30:1, and the ball milling time is 6-24 hours. Dry in a vacuum oven at 90-100°C for 2-2.5 hours, grind to powder after drying, and sieve with a 200-mesh sieve to obtain a fine powder;
[0029] Step 4: Press the fine powder by ordi...
Embodiment 1
[0035] Step 1, purifying the steel laminate with a thickness of 4-10 mm after sandblasting to obtain a clean steel laminate;
[0036] Step 2, take the following materials by mass percentage: 10% iron powder, 4% graphite powder, and the rest are tungsten iron powder, the sum of the mass percentages of the above components is 100%;
[0037] Step 3: The materials weighed in step 2 are mixed by planetary high-energy ball mill. The speed of the ball mill is 300r / min, the ratio of ball to material is 10:1, and the ball milling time is 6h. Dry it in the box for 2.5 hours, grind it into powder after drying, and sieve it with a 200-mesh sieve to obtain a fine powder;
[0038] Step 4: Press the fine powder by ordinary molding or cold isostatic pressing, and the pressing pressure is 1.0t / cm 2 , thickness d 4 1.25mm, the pressing process needs to add 2% paraffin of the weight of the fine powder as a forming agent to make a powder tablet;
[0039] Step 5: Alternately superimpose the cle...
Embodiment 2
[0042] Step 1, purifying the steel laminate with a thickness of 10 mm after sandblasting to obtain a clean steel laminate;
[0043] Step 2, take the following materials by mass percentage: 20% of iron powder, 13% of graphite powder, and the rest are ferrotitanium powder, the sum of the mass percentages of the above components is 100%;
[0044] Step 3: The materials weighed in step 2 are mixed by planetary high-energy ball mill. The speed of the ball mill is 400r / min, the ratio of ball to material is 30:1, and the ball milling time is 24h. Dry it in the box for 2 hours, grind it into powder after drying, and sieve it with a 200-mesh sieve to obtain a fine powder;
[0045] Step 4: Press the fine powder by ordinary molding or cold isostatic pressing, and the pressing pressure is 1.5t / cm 2 , thickness d 4 2.5mm, the pressing process needs to add 4% paraffin of the weight of the fine powder as a forming agent to make a powder tablet;
[0046] Step 5: Alternately superimpose the ...
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