CN211549847U

CN211549847U - Improved engine cylinder

Info

Publication number: CN211549847U
Application number: CN201922045826.0U
Authority: CN
Inventors: 代卫东
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-22
Anticipated expiration: 2029-11-22

Abstract

The utility model aims at prior art's not enough, provide a modified engine cylinder body and method, modified engine cylinder body, including engine cylinder body and with engine cylinder body complex cylinder liner, wherein, engine cylinder body uses the aluminium alloy material preparation, engine cylinder liner uses the cast iron preparation, engine cylinder body inner wall surface is provided with first wearing layer, first wearing layer uses laser cladding technology to make, laser cladding technology modified engine cylinder body and method thereof, engine cylinder hole laser cladding make between cladding and the base member form metallurgical bonding, and bonding strength is big, has reduced the risk that engine cylinder hole cladding drops.

Description

Improved engine cylinder

Technical Field

The utility model relates to an engine field particularly, relates to a modified engine cylinder body.

Background

The cylinder body of the gasoline/diesel engine is generally divided into cast iron and cast aluminum, as is well known, because of the strength of aluminum-based materials, a part of the interior of an aluminum cylinder body engine still uses cast iron materials, cast iron or steel bushings of about 5mm are generally directly cast in a blank of the cylinder body of the aluminum engine, and then through multiple machining procedures, technical indexes of design requirements are met, and qualified engine cylinder body parts are produced.

In order to solve the problem that the liner is heated and deformed due to the difference of the thermal expansion coefficients of the cast iron and the aluminum alloy matrix of the engine, the latest technology at present is to adopt a plasma spraying technology APS or a thermal spraying technology, an alloy wear-resistant layer with the thickness of about 300 mu m is sprayed on the surface of a cylinder hole of the roughened aluminum alloy engine, the hardness of the coating is higher than that of the traditional cast iron liner, the wear resistance is greatly improved, 1-5% of pores formed by the spraying technology have an oil storage function, lubrication is promoted to play a role in friction reduction and the like, the problems of weight and size increase of the cast iron liner of the aluminum alloy engine cylinder and oil consumption and emission increase caused by inconsistent thermal expansion with the inner wall of the cylinder are solved, and the plasma spraying technology of the cylinder hole is adopted by more and more engine. But also has the problems of high cost of texturing process, complex quality control, low utilization rate of spraying materials, low bonding force between the aluminum substrate of the engine and the coating and low spraying yield.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of prior art, provide an improved engine cylinder body and method thereof.

The improved engine cylinder body comprises an engine cylinder body and a cylinder sleeve matched with the engine cylinder body, wherein the engine cylinder body is made of an aluminum alloy material, the engine cylinder sleeve is made of cast iron, a first wear-resistant layer is arranged on the surface of the inner wall of the engine cylinder body and is manufactured by using a laser cladding technology, the thickness of the first wear-resistant layer is 100-250 um, and the strength of the first wear-resistant layer is 100-200 MPa.

Further, a second wear-resistant layer is arranged on the outer surface of the cylinder sleeve and is manufactured by using a laser cladding technology, the thickness of the second wear-resistant layer is 100-150 microns, and the strength of the second wear-resistant layer is 100-200 MPa.

Further, first wearing layer includes first ceramic wearing layer and second ceramic wearing layer, first ceramic wearing layer with be provided with first aluminum alloy wearing layer between the second ceramic wearing layer, first ceramic wearing layer thickness is 60um ~ 120um, first aluminum alloy wearing layer thickness is 10um ~ 50um, second ceramic wearing layer thickness is 40um ~ 100 um.

Further, the second wearing layer includes second aluminum alloy wearing layer and third aluminum alloy wearing layer, the second aluminum alloy wearing layer with still be provided with the third ceramic wearing layer between the third aluminum alloy wearing layer, second aluminum alloy wearing layer thickness is 10um ~ 50um, and third ceramic wearing layer thickness is 40um ~ 100um, and third aluminum alloy wearing layer thickness is 10 ~ 50 um.

Further, first ceramic wearing layer thickness is 90um, first aluminum alloy wearing layer thickness is 30um, second ceramic wearing layer thickness is 70 um.

Further, the thickness of the second aluminum alloy wear-resistant layer is 30um, the thickness of the third ceramic wear-resistant layer is 70um, and the thickness of the third aluminum alloy wear-resistant layer is 30 um.

Compared with the prior art, the method has the following remarkable advantages:

1. improved engine cylinder body, engine cylinder hole laser cladding makes and forms metallurgical bonding between coating and the base member, and bonding strength is big, has reduced the risk that engine cylinder hole coating drops.

2. Modified engine cylinder body, under the prerequisite of reinforcing wearing layer intensity, prolonged life, the wearing layer that has thermal-insulated function simultaneously has reduced calorific loss, also improves the fuel efficiency of engine.

Drawings

Fig. 1 is a schematic structural diagram of the improved engine cylinder block of the present invention.

Fig. 2 is a schematic diagram of a cylinder liner structure of the improved engine cylinder body of the present invention.

The labels in the figure are: 1-an engine block, 11 a first wear layer, 111-a first ceramic wear layer, 112-a first aluminum alloy wear layer, 113-a second ceramic wear layer, 12-a cylinder bore; 2-cylinder liner, 21-second wear-resistant layer, 211-second aluminum alloy wear-resistant layer, 212-third ceramic wear-resistant layer and 213-third aluminum alloy wear-resistant layer.

Detailed Description

The invention is described in further detail below with reference to the drawings and the detailed description.

Example 1: as shown in fig. 1-2, the improved engine cylinder block comprises an engine cylinder block 1 and a cylinder sleeve 2 matched with the engine cylinder block, wherein the engine cylinder block 1 is made of an aluminum alloy material, the engine cylinder sleeve 2 is made of a cast iron material, a first wear-resistant layer 11 is arranged on the surface of the inner wall of the engine cylinder block 1, the thickness of the first wear-resistant layer 11 is 100-250 um, and the strength of the first wear-resistant layer is 100-200 MPa.

Further, a second wear-resistant layer 21 is arranged on the outer surface of the cylinder sleeve, the thickness of the second wear-resistant layer 21 is 100-150 um, and the strength of the second wear-resistant layer is 100-200 MPa.

Further, first wearing layer 11 includes first ceramic wearing layer 111 and second ceramic wearing layer 113, first ceramic wearing layer 111 with be provided with first aluminum alloy wearing layer 112 between second ceramic wearing layer 113 for as the base face, improve bonding strength, first ceramic wearing layer 111 thickness is 60um ~ 120um, first aluminum alloy wearing layer thickness 112 degree is 10um ~ 50um, second ceramic wearing layer thickness 113 degree is 40um ~ 100 um.

Further, second wearing layer 21 includes second aluminum alloy wearing layer 211 and third aluminum alloy wearing layer 213, second aluminum alloy wearing layer 211 with still be provided with third ceramic wearing layer 212 between the third aluminum alloy wearing layer 213, second aluminum alloy wearing layer 211 thickness is 10um ~ 50um, and third ceramic wearing layer 212 thickness is 40um ~ 100um, and third aluminum alloy wearing layer 213 thickness is 10 ~ 50um for provide certain protection to third ceramic wearing layer 212, the heat resistance of guarantee cylinder liner can provide the base plane for continuing to melt and cover antifriction.

Further, 111 thicknesses of first ceramic wearing layer are 90um, 112 thicknesses of first aluminum alloy wearing layer are 30um, 113 thicknesses of second ceramic wearing layer are 70 um.

Further, second aluminum alloy wearing layer 211 thickness is 30um, and third ceramic wearing layer 212 thickness is 70um, and third aluminum alloy wearing layer 213 thickness is 30 um.

Further, the first ceramic wear-resistant layer, the second ceramic wear-resistant layer and the third ceramic wear-resistant layer can also be made of metal alloy materials such as nickel-based, cobalt-based, iron-based alloy and tungsten carbide composite materials.

Further, the cylinder liner can also be an iron-based alloy liner.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications and changes, all of which are within the spirit and principle of the present invention, and any modifications, equivalent replacements, improvements, etc., such as modifying the rotation of the engine cylinder body into the rotation of the laser cladding gun body itself to realize the laser cladding of the inner wall of the engine cylinder hole, all of which are included in the protection scope of the present invention.

Claims

1. The utility model provides a modified engine cylinder body, including engine cylinder body and with engine cylinder body complex cylinder liner, its characterized in that, engine cylinder body uses aluminum alloy material preparation, engine cylinder liner uses cast iron preparation, engine cylinder body inner wall surface is provided with first wearing layer, first wearing layer uses laser cladding technique to make, first wearing layer thickness is 100 ~ 250um, first wearing layer intensity is 100 ~ 200 MPa.

2. The improved engine cylinder block as recited in claim 1, wherein a second wear layer is disposed on an outer surface of the cylinder sleeve, the second wear layer is manufactured by a laser cladding technology, a thickness of the second wear layer is 100-150 μm, and a strength of the second wear layer is 100-200 MPa.

3. The improved engine cylinder block according to claim 1, wherein the first wear layer comprises a first ceramic wear layer and a second ceramic wear layer, a first aluminum alloy wear layer is disposed between the first ceramic wear layer and the second ceramic wear layer, the thickness of the first ceramic wear layer is 60um to 120um, the thickness of the first aluminum alloy wear layer is 10um to 50um, and the thickness of the second ceramic wear layer is 40um to 100 um.

4. The improved engine cylinder block according to claim 2, wherein the second wear layer comprises a second aluminum alloy wear layer and a third aluminum alloy wear layer, a third ceramic wear layer is further disposed between the second aluminum alloy wear layer and the third aluminum alloy wear layer, the thickness of the second aluminum alloy wear layer is 10-50 um, the thickness of the third ceramic wear layer is 40-100 um, and the thickness of the third aluminum alloy wear layer is 10-50 um.

5. The improved engine block according to claim 3, wherein the first ceramic wear layer is 90um thick, the first aluminum alloy wear layer is 30um thick, and the second ceramic wear layer is 70um thick.

6. The improved engine block of claim 4, wherein the second aluminum alloy wear layer is 30um thick, the third ceramic wear layer is 70um thick, and the third aluminum alloy wear layer is 30um thick.