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Novel amorphous reinforced valve material

A new type of valve technology, used in lift valves, mechanical equipment, valve devices, etc., can solve problems such as incompetence, and achieve the effects of improving welding performance, reducing costs, and excellent high temperature performance.

Inactive Publication Date: 2016-03-09
杨秋香
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve can serve for a long time at a high temperature above 500°C, but when the performance of the engine is improved and the valve is required to serve at a temperature above 550°C, this material is not competent

Method used

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  • Novel amorphous reinforced valve material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Prepare the ingredients according to the alloy composition range, C: 0.35%; Si: 0.05%; Mo: 0.14%; Mn: 0.75%; Cr: 0.87%; W: 1.0%; Ce: 0.1%; Nb: 0.1%; Cu: 0.05%. Mix the alloy materials evenly;

[0023] (2) Smelting in a vacuum induction furnace with the temperature controlled at 1650°C for 2 hours;

[0024] (3) Perform three forgings at 1100°C, 1050°C, and 950°C respectively, and control the deformation ratio to 72% to obtain the intake valve blank;

[0025] (4) Insulate at 800°C for 1.5h, quench, then heat to 500°C, hold for 2 hours, and finally air cool;

[0026] (5) Smelting Zr 50 Ti 15 Mo 8 Al 12 W 5 V 5 B 5 Amorphous alloy: the raw materials are configured according to the atomic ratio of the alloy, vacuum smelted, poured and cooled to obtain an amorphous alloy;

[0027] (6) Use milling machine to process the surface finish of the cone surface;

[0028] (7) Welding amorphous alloy on the cone surface;

[0029] (8) Surface finish treatment.

Embodiment 2

[0031] (1) Prepare the ingredients according to the alloy composition range, C: 0.40%; Si: 0.065%; Mo: 0.2%; Mn: 0.80%; Cr: 0.80%; W: 0.9%; Ce: 0.2%; Nb: 0.05%; Cu: 0.1%. Mix the alloy materials evenly;

[0032] (2) Smelting in a vacuum induction furnace with the temperature controlled at 1620°C for 2 hours;

[0033] (3) Perform three forgings at 1100°C, 1050°C, and 950°C respectively, and control the deformation ratio to 73% to obtain the intake valve blank;

[0034] (4) Insulate at 850°C for 1 hour, quench, then heat to 500°C, hold for 2.5 hours, and finally air cool;

[0035] (5) Smelting Zr 50 Ti 15 Mo 8 Al 12 W 7 V 6 B 2 Amorphous alloy: the raw materials are configured according to the atomic ratio of the alloy, vacuum smelted, poured and cooled to obtain an amorphous alloy;

[0036] (6) Use milling machine to process the surface finish of the cone surface;

[0037] (7) Welding amorphous alloy on the cone surface;

[0038](8) Surface finish treatment.

Embodiment 3

[0040] (1) Prepare the ingredients according to the alloy composition range, C: 0.38%; Si: 0.09%; Mo: 0.1%; Mn: 0.56%; Cr: 0.80%; W: 0.50%; Ce: 0.17%; Nb: 0.09%; Cu: 0.086%. Mix the alloy materials evenly;

[0041] (2) Vacuum induction furnace is used for smelting, the temperature is controlled at 1600°C, and smelting is carried out for 2.5 hours;

[0042] (3) Perform three forgings at 1100°C, 1050°C, and 950°C respectively, and control the deformation ratio to 71% to obtain the intake valve blank;

[0043] (4) Insulate at 800°C for 1 hour, quench, then heat to 480°C, hold for 2 hours, and finally air cool;

[0044] (5) Smelting Zr 50 Ti 15 Mo 8 al 12 W 5 V 5 B 5 Amorphous alloy: configure raw materials according to the atomic ratio of the alloy, carry out vacuum melting, pour and cool to obtain amorphous alloy

[0045] (6) Use milling machine to process the surface finish of the cone surface;

[0046] (7) Welding amorphous alloy on the cone surface;

[0047] (8) S...

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Abstract

The invention discloses a novel amorphous reinforced valve material and a preparation method thereof. An alloy adopted by a valve comprises, by weight percentage, 0.32%-0.40% of C, 0.17%-0.37% of Si, 2.5%-3.5% of Mo, 0.50%-0.80% of Mn, 0.80%-1.10% of Cr, 0.50%-1.0% of W, less than or equal to 0.013% of Ni, less than or equal to 0.015% of P, less than or equal to 0.015% of S, less than or equal to 0.010% of Cu and the balance Fe. The inlet valve material is machined through the process of smelting, forging and welding the amorphous alloy. The valve material is high in surface hardness, good in wear resistance and long in service life.

Description

Technical field [0001] The invention involves the field of new materials, especially a valve material and its preparation methods. Background technique [0002] The work characteristics of the engine require that the valve is characterized by the characteristics of friction, high temperature resistance, fatigue resistance, and high toughness. The performance of the valve material directly affects the performance of the engine.Due to the high commercial value and high commercial secrets of this technology, there are very few reports on valve materials and their processing technology.At present, domestic valve materials include 40CR, 4CR9SI2, 4CR10SI2MO, 21-4N, and 23-8n.However, my country's current valve life is not as good as one -third of foreign advanced levels. [0003] The valve is divided into the valve and the exhaust valve. The air enters the engine cylinder through the intake valve and is mixed with the fuel. The exhaust gas generated after the combustion discharge the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/12C22C38/04C22C38/16C22C45/10C21D8/00B23P15/00F01L3/02F01L3/04
CPCC22C38/18B23P15/00C21D8/005C22C38/002C22C38/04C22C38/12C22C38/16C22C45/10F01L3/02F01L3/04
Inventor 杨秋香
Owner 杨秋香
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