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A kind of preparation method of cylinder liner and its special device

A special device and cylinder liner technology are applied in the field of preparation of cylinder liner to achieve the effects of low energy consumption, good practicability and good economic benefits

Active Publication Date: 2016-04-20
JIANGSU ZIJIN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Purpose of the invention: In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing a cylinder liner, in the hope that the method not only has a high degree of automation, but also has low energy consumption and low pollution; the prepared cylinder liner has no air holes, clamping Casting defects such as slag, to meet the needs of use

Method used

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  • A kind of preparation method of cylinder liner and its special device
  • A kind of preparation method of cylinder liner and its special device
  • A kind of preparation method of cylinder liner and its special device

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A kind of preparation method of cylinder liner, concrete steps are as follows:

[0026] 1) Smelting

[0027] Use 20-30% of the mass percentage of pig iron, 45-55% of scrap steel, 20-30% of the furnace charge, and then add an appropriate amount of alloy, and melt it in an intermediate frequency furnace to melt it into molten iron. The melting temperature is 1500±20°C , and use a spectrometer to analyze the composition to make it meet the chemical composition requirements (mass percentage): C: 3.0-3.7%, Si: 2-2.8%, Mn: 0.5-1.0%, P: 0.05-0.2%, S: 0.15% Below, B: 0.04 to 0.08%, the remainder is iron and unavoidable impurities. Obtain molten iron that meets the requirements;

[0028] 2) Mold spraying

[0029] Spray the paint in the mold (composed of bentonite and diatomite plus water, the mass ratio of bentonite, diatomite to water is 1~2:1~2:10~20), wherein the temperature of the spraying mold is 400±20°C, spraying Mold speed 380±10r / min, spraying walking speed 250±10mm...

Embodiment 2

[0035] A special device for the preparation method of a cylinder liner, comprising an intermediate frequency furnace 1, a ladle trolley 2, a centrifugal casting machine 3, a pouring trolley 4 and a mold 5; the intermediate frequency furnace 1 is set at one end of the ladle trolley 2, and the centrifugal casting machine 3 is set At the other end of the ladle trolley 2, the other end of the centrifugal casting machine 3 is provided with a pouring trolley 4.

[0036] The structure of ladle trolley 2 is as follows: figure 2 As shown, the main structure includes an electrical cabinet 21, a motor 22, a large ladle 23, a small ladle 24, a front and rear moving trolley 25, a left and right moving platform 26 and an electric wire 27; 25 moves forward and backward along the guide rail under the drive of the drive mechanism (not shown in the figure, conventional oil cylinders, gears, etc.). The large ladle 23 and the small ladle 24 are all arranged on the front and rear moving dolly 25...

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Abstract

The invention discloses a fabrication method of a cylinder liner and a special device therefor. The fabrication method includes: 1, smelting, namely, smelting, by mass percent, 20-30% of pig iron, 45-55% of steel scrap, 20-30% of scrap returns and the proper amount of alloy in an intermediate frequency furnace at the temperature of 1500 + / - 20 DEG C to obtain molten iron, and analyzing ingredients with a spectrograph to obtain smelted molten iron; 2, performing casting and demolding. The fabrication method has the advantages that automation level is high, energy consumption is low, pollution is low, the fabricated castings are good in mechanical strength and rigidity and the fabrication method is suitable for popularization and application in production operations. The special device for the fabrication method of the cylinder liner is simple in structure, low in cost and high in automation level, a cylinder liner fabricated by the special device is free of casting defects, such as pores and slag inclusion, and is well practicable.

Description

technical field [0001] The invention belongs to the technical field of cylinder liner preparation, and in particular relates to a method for preparing a cylinder liner and a special device thereof. Background technique [0002] Casting mold means that in order to obtain the structural shape of the part, other easy-to-form materials are used to make the structural shape of the part in advance, and then the mold is placed in the sand mold, so a cavity with the same structural size as the part is formed in the sand mold. Then pour a fluid liquid into the cavity, and after the liquid cools and solidifies, it can form a part exactly the same as the shape and structure of the mold. The traditional casting process has low concentration and unreasonable product structure. It is in the middle and low-end state of the global industrial chain division and it is difficult to change in the short term. The extensive development mode of high investment, high consumption, high pollution, lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D13/02B22D13/10
Inventor 朱仲安
Owner JIANGSU ZIJIN POWER