CN102628119A - Low-nickel and high-iron copper alloy glass mould and manufacturing method thereof - Google Patents

Abstract

The invention relates to a low-nickel and high-iron copper alloy glass mould and a manufacturing method thereof. The mould has better oxidization resistance, heat fatigue resistance, heat conductivity, enhanced toughness, good heat cracking resistance, and has the advantages of easiness of machining, reduced cost and long service life. The low-nickel and high-iron copper alloy glass mould comprises the following components in weight percentage: 0.05-0.2% of Si, 8.0-10.0% of Al, 4.0-6.0% of Ni, 0.05-0.25% of Zn, 4.0-6.0% of Fe and 0.8-1.5% of Mn; after the components are smelted, the smelted components are cast at 1250-1280 DEG C; the heat-preservation time of heat treatment is 6 hours and the temperature is controlled at 680 DEG C; and the mixture is reduced to 150 DEG C along the furnace temperature, the furnace temperature is raised to the room temperature and then the product is taken out to obtain the glass mould which has the properties that the tensile strength is 400-450 N/mm<2>, the Brinell hardness is 175-200, the bending strength is 350 N/mm<2>, the thermal conductivity is 0.12-0.15 k/M*S*DEG C, the thermal expansion coefficient is 17*10<-6> m/k and the service life is 1.3-1.5 million times.

Description

Low nickel high ferro copper alloy glass mould and method of manufacture thereof

Technical field

The present invention relates to a kind of glass article, particularly a kind of low nickel high ferro copper alloy glass mould.The invention still further relates to the method for manufacture of above-mentioned glass article.

Background technology

Because Cu alloy material has good thermal conductivity, but good castibility, advantages such as long service life, domestic and international high-end Glass Containers product generally uses copper alloy to do moulding stock.

Glass article is the instrument that glasswork is made moulding, and in the process of glasswork moulding, the thermal conductivity that material is good makes the mould temperature gradient inside or outside reduce to minimum, and prolonged the work-ing life of mould.Cu alloy material has possessed good thermal conductivity, can not only prolong die life, also the glasswork molding effect is played very big effect; Can prevent effectively that the frit temperature from not falling; Be difficult to solidify, frit receives influence of gravity, and the bad glasswork that causes.Moreover, Cu alloy material also is suitable for the making of light weight glasswork, can reach effective saving frit, reduces the carbon emission amount.

The tantnickel copper alloy of widespread usage can have work-ing life and higher hardness preferably, because the content of nickel element is high, causes its cost high; Difficult processing, especially under the fast radiating state of high temperature, because of the hardness of material own higher; Thermal deformation coefficient is big, and poor toughness very easily causes the mould cracking.Surface hardening processing and use to mould all have more defective products to occur, and have therefore improved the mould use cost, have reduced production efficiency of products.

In order not change the self character of Cu alloy material, through adjustment Si, Al, Ni, Zn, Fe, Mn constituent content, hope to obtain to have heat resistanceheat resistant split, anti-oxidant, heat conduction is excellent, be prone to processing, copper alloy glass mould that cost is light.

For example, the composition of tantnickel copper alloy (wt%) is: Si0.8～1.2%, Al8.5～10.5%, Ni7.5～9.5%, Zn7.5～9.5%, Fe0.8～1.0%, Mn0.08～0.1%, Gu residue; The alloyed copper material of this research, though hardness is high, anti-oxidant, difficult processing, more easy to crack, cost is high.Under the condition of high temperature, bigger like the temperature drop gradient, to reducing greatly the work-ing life of mould.

Summary of the invention

The purpose of this invention is to provide a kind of low nickel high ferro copper alloy glass mould, this glass article makes it have excellent performance through the optimization proportioning of element.The present invention also provides above-mentioned low nickel high ferro copper alloy glass mould manufacturing method.

In order to reach above-mentioned technical purpose, a kind of low nickel high ferro copper alloy glass mould of the present invention comprises following weight percent component:

All the other are Gu and common impurity.

Si, Ni content are can hardened material high temperature resistant, anti-oxidant.Fe, Al content improve can enhanced toughness, and splitting resistance is good.

The content that the crucial part of the present invention is to reduce Ni adds the content that promotes Fe simultaneously, and its hardness is fallen slightly; Strongthener toughness, good to reach hot-cracking resistance, be prone to processing, cost alleviates, the characteristics of long service life.

The tensile strength of said glass article is 400-450N/mm ², HB is 175-200, bending strength is 350N/mm ², thermal conductivity is 0.12-0.15k/M.S. ℃, thermal expansion factor is 17*10 ^-6M/k, be 130-150 ten thousand times work-ing life.

The method of manufacture of above-mentioned low nickel high ferro copper alloy glass mould may further comprise the steps:

1) following weight percent component is carried out melting:

All the other are Gu and common impurity;

2) under 1250-1280 ℃, pour into a mould;

3) soaking time during thermal treatment is 6 hours, 680 ℃ of temperature controls;

4) reducing to 150 ℃ of kindling to room temperatures with furnace temperature takes out.

The teeming temperature of product of the present invention when casting is 1250-1280 ℃, adopts unique pouring technology casting.When this temperature casting, elements such as ferronickel reach the optimum activity state, are beneficial to the element distribution and merge.

The soaking time of product of the present invention when thermal treatment is 6 hours, and be long than tantnickel copper alloy (4 hours), and 680 ℃ of temperature controls than tantnickel copper alloy (600 ℃) height, are reduced to 150 ℃ of kindling to room temperatures with furnace temperature and taken out.Not in the thermal treatment process of routine, its unique distinction is fully to eliminate Cu alloy material quenching and the thermal stresses that causes makes its thermal expansion factor keep stable when cast, under the situation of frequently touching heat, is difficult for hot tearing.

Glass article of the present invention has good oxidization resistance, thermal fatigue resistance, thermal conductivity, and enhanced toughness makes it have good hot-cracking resistance simultaneously, and is prone to processing, and cost alleviates, long service life.

Embodiment

Embodiment 1

1) following weight percent component is carried out melting:

All the other are Gu and common impurity;

2) under 1280 ℃, pour into a mould;

3) soaking time during thermal treatment is 6 hours, 680 ℃ of temperature controls;

4) reducing to 150 ℃ of kindling to room temperatures with furnace temperature takes out.

The tensile strength of the glass article that obtains is 410N/mm ², HB is 200, bending strength is 350N/mm ², thermal conductivity is 0.12k/M.S. ℃, thermal expansion factor is 17*10 ^-6M/k is 1,300,000 times through testing work-ing life.

Embodiment 2

1) following weight percent component is carried out melting:

All the other are Gu and common impurity;

2) under 1250 ℃, pour into a mould;

3) soaking time during thermal treatment is 6 hours, 680 ℃ of temperature controls;

4) reducing to 150 ℃ of kindling to room temperatures with furnace temperature takes out.

The tensile strength of the glass article that obtains is 400N/mm ², HB is 185, bending strength is 350N/mm ², thermal conductivity is 0.15k/M.S. ℃, thermal expansion factor is 17*10 ^-6M/k is 1,450,000 times through testing work-ing life.

Embodiment 3

1) following weight percent component is carried out melting:

All the other are Gu and common impurity;

2) under 1250 ℃, pour into a mould;

3) soaking time during thermal treatment is 6 hours, 680 ℃ of temperature controls;

4) reducing to 150 ℃ of kindling to room temperatures with furnace temperature takes out.

The tensile strength of the glass article that obtains is 450N/mm ², HB is 175, bending strength is 350N/mm ², thermal conductivity is 0.13k/M.S. ℃, thermal expansion factor is 17*10 ^-6M/k is 1,500,000 times through testing work-ing life.

The foregoing description does not limit the present invention in any way, and every employing is equal to the technical scheme that replacement or the mode of equivalent transformation obtain and all drops in protection scope of the present invention.

Claims (2)

1. one kind low nickel high ferro copper alloy glass mould is characterized in that comprising following weight percent component:

All the other are Gu and common impurity;

The tensile strength of said glass article is 400-450N/mm ², HB is 175-200, bending strength is 350N/mm ², thermal conductivity is 0.12-0.15k/M.S. ℃, thermal expansion factor is 17*10 ^-6M/k, be 130-150 ten thousand times work-ing life.

2. the method for manufacture of one kind low nickel high ferro copper alloy glass mould is characterized in that may further comprise the steps:

1) following weight percent component is carried out melting:

All the other are Gu and common impurity;

2) under 1250-1280 ℃, pour into a mould;

3) soaking time during thermal treatment is 6 hours, 680 ℃ of temperature controls;

4) reducing to 150 ℃ of kindling to room temperatures with furnace temperature takes out.