A cladding method for wear-resistant coating on the surface of magnesium-based alloy

A magnesium-based alloy and wear-resistant coating technology, which is applied in the field of cladding of wear-resistant coatings on the surface of magnesium-based alloys, can solve problems such as reduced service life of equipment or parts, failure to form battery circuits, and failure to thicken deposit layers , to achieve the effects of short cladding time, increased thickness, increased thickness and hardness

Inactive Publication Date: 2016-01-27
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Wear and corrosion problems are common in all fields of industrial production. Once wear and other damage occurs on the surface of the material, the performance of the material will drop sharply, the service life of the equipment or parts will decrease, and the shutdown will cause serious economic losses.
The currently used EDM deposition technology, due to the thin deposition layer (within 10-30 μm), is restricted by the technology itself and cannot prepare thick coatings. Even if the deposition is repeated, the deposition layer cannot be thickened, because the electrode rod is Anode, the workpiece to be processed is the cathode. W

Method used

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  • A cladding method for wear-resistant coating on the surface of magnesium-based alloy

Examples

Experimental program
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Example Embodiment

[0020] Example 1:

[0021] (1) Pretreatment of the surface of the workpiece: before cladding the surface of the magnesium-based alloy, firstly grind it with a hand-held grinder to remove surface oxide scales and rust spots, and then clean the surface of the workpiece with alcohol or acetone to remove dirt.

[0022] (2) The magnesium-based alloy is used as the cladding substrate, and the ceramic carbide WC is used as the electrode. The electrode is a rotating electrode with a rotation speed of 2700r / min, an electrode diameter of Ф8mm, and an electrode elongation of 15mm. Under gas protection, thermal cladding equipment is used for processing; cladding process parameters are: cladding power 4000, cladding voltage 280V, cladding frequency 2500HZ.

[0023] With the above-mentioned high output power treatment, a larger liquid molten pool can be formed, which increases the thickness of the cladding layer and the diffusion of elements in the heat-affected zone; at the same time, a la...

Example Embodiment

[0027] Example 2:

[0028] (1) Pretreatment of the surface of the workpiece: before cladding the surface of the magnesium-based alloy, firstly grind it with a hand-held grinder to remove surface oxide scales and rust spots, and then clean the surface of the workpiece with alcohol or acetone to remove dirt.

[0029] (2) Magnesium-based alloy is used as the cladding substrate, ceramic carbide WC-8Co is used as the electrode, the electrode is a rotating electrode, the rotation speed is 2800r / min, the diameter of the electrode is Ф9mm, and the elongation of the electrode is 20mm. Under the protection of inert gas, use thermal cladding equipment for processing; cladding process parameters are: cladding power 5000, cladding voltage 300V, cladding frequency 2800HZ;

[0030] (3) The electrode is in contact with the substrate surface, and the electrode adopts a spiral reciprocating processing method;

[0031] (4) The hardness of the cladding layer is 1700~1900HV, and the thickness of ...

Example Embodiment

[0032] Example 3:

[0033] (1) Pretreatment of the surface of the workpiece: Before cladding the surface of the magnesium-based alloy, firstly polish it with sandpaper to remove surface scale and rust spots, and then clean the surface of the workpiece with alcohol or acetone to remove dirt.

[0034] (2) Magnesium-based alloy is used as the cladding substrate, ceramic carbide WC-8Co is used as the electrode, the electrode is a rotating electrode, the rotation speed is 3000r / min, the diameter of the electrode is Ф10mm, and the elongation of the electrode is 30mm. Under the protection of inert gas, use thermal cladding equipment for processing; cladding process parameters are: cladding power 6000, cladding voltage 380V, cladding frequency 3000HZ;

[0035] (3) The electrode is in contact with the substrate surface, and the electrode adopts a spiral reciprocating processing method;

[0036] (4) The hardness of the cladding layer is 1700~1900HV, and the thickness of the cladding la...

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Abstract

The invention discloses a cladding method for a magnesium-based alloy surface wear-resistant coating. The cladding method comprises the following steps: (1) pre-treating the surface of a workpiece; (2) taking a magnesium-based alloy as a cladding base body and taking a ceramic hard alloy as an electrode, wherein the electrode is a rotary electrode and the rotary speed is 2700-3000r/min; the diameter of the electrode is phi8mm-phi10mm and the elongation of the electrode is 10mm-30mm; utilizing hot cladding equipment to treat under the protection of inert gas, wherein the cladding parameters are as follows: the cladding power is 4000W-6000W, the cladding voltage is 280V-380V and the cladding frequency is 2500HZ-3000HZ; (3) enabling the electrode and the base body to be in surface contact and machining the electrode by adopting a spiral reciprocating type machining manner; and (4) obtaining the product with the following parameters: the rigidity of a cladding layer is 1700HV-1900HV and the thickness of the cladding layer is 210-230 microns. The cladding method for the magnesium-based alloy surface wear-resistant coating adopts a cladding technology to prepare the wear-resistant cladding layer; the prepared cladding layer and the magnesium-based alloy base body are in metallurgical bonding; the bonding strength is high and the rigidity and the wear resistance of the cladding layer are good.

Description

technical field [0001] The invention relates to the technical field of metal surface coating preparation, in particular to a cladding method for a wear-resistant coating on the surface of a magnesium-based alloy. Background technique [0002] Wear and corrosion problems commonly exist in various fields of industrial production. Once wear and other damage occurs on the surface of the material, the performance of the material will drop sharply, the service life of the equipment or parts will decrease, and the shutdown will cause serious economic losses. The currently used EDM deposition technology, due to the thin deposition layer (within 10-30 μm), is restricted by the technology’s own conditions and cannot prepare thick coatings. Even if the deposition is repeated, the deposition layer cannot be thickened, because the electrode rod is The anode, the workpiece to be processed is the cathode. When the coating is deposited on the workpiece, the surface of the workpiece and the ...

Claims

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Application Information

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IPC IPC(8): C23C24/10
Inventor 张瑞珠严子奇杨杰任洋洋李林杰代超
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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