CN2379230Y - Metal-ceramic composite roll collar - Google Patents

Abstract

The utility model relates to a metal-ceramic composite roll collar. The utility model is characterized in that the utility model is of a double-layer structure; the outer layer is a TiC base metal-ceramic gradient composite material component; the inner layer is an alloy steel or a stainless steel material component. The utility model has good heat fatigue resistance performance and oxidation resistance ability, has better heat and cracking resistance ability and high-temperature and wearing resistance ability, and greatly improves the service life.

Description

A kind of metal ceramic composite roll collar

The utility model relates to a kind of high-speed rod-rolling mill collars and technology technology of preparing thereof.

At present, the high-speed rod-rolling mill mm finishing mill unit use collars be by tungsten carbide and several components such as cobalt, nickel through the manufacturing of HIP sintering technology, the shortcoming of this collars is that thermal fatigue resistance, antioxygenic property are poor, density is big, cost is high.

At problem set forth above, the purpose of this utility model is according to the actual requirement of collars of high-speed rod-rolling mill mm finishing mill unit, a kind of have good thermal fatigue resistance and oxidation resistance are provided, have better heat-resisting crackle ability and high temperature wear resistant ability, can improve the metal ceramic composite roll collar in service life.

The utility model provides a kind of metal ceramic composite roll collar, it is characterized in that: this collars is a double-decker, and outer (1) is TiC based ceramic metal gradient composites spare, and internal layer (2) is steel alloy or stainless steel materials and parts.

The utility model metal ceramic composite roll collar skin is a TiC based ceramic metal gradient composites, and its component contains titanium carbide, nickel, chromium, molybdenum, titanium, aluminium, the proportioning of each component following (percentage by weight):

Titanium carbide (TiC) 35.0～55.0%

Nickel (Ni) 30.0～45.0%

Chromium (Cr) 5.0～12.0%

Molybdenum (Mo) 2.0～8.0%

Titanium (Ti) 1.0～2.0%

Aluminium (Al) 0.5～1.0%

Second embodiment of the present utility model is to add tungsten carbide, tungsten and titanium nitride in said components, and the content of tungsten carbide is 2.0～8.0%, and the content of tungsten is 2.0～6.0%, and the content of titanium nitride is 2.0～6.0%.

The effect of outer its each component of collars of the utility model is as follows:

TiC: improve anti-wear performance, heat crack resistance;

WC: improve heat crack resistance;

Ni: binding agent, adjust hardness range according to different proportionings;

Mo: crystal grain thinning, improve TiC and NiCr alloy interface wetability, improve intensity;

Cr: improve high-temperature behavior;

Al: the dispersion-strengtherning matrix, improve hardness;

Ti: crystal grain thinning, improve intensity.

The utility model metal ceramic composite roll collar has high temperature wear resistant performance and good thermal fatigue resistance and antioxygenic property preferably, has reduced interior tissue stress, in light weight, has improved the production efficiency of high-speed rod-rolling mill, has reduced the collars production cost.

Below by implementing side in detail the utility model is described in detail.

Accompanying drawing 1 is the composite ring transverse sectional view.

Accompanying drawing 2 is a composite ring longitudinal cross-section schematic diagram.

Embodiment

As shown in Figure 1, 2, metal ceramic composite roll collar is double-decker, and outer (1) is TiC based ceramic metal gradient composites spare, and internal layer (2) is metallic steel or stainless steel materials and parts.

Following step is adopted in its preparation:

1) uses PM technique, adopt vacuum liquid-phase sintering to prepare the metal ceramic gradient composite;

2) connect metal ceramic composite roll collar skin (metal ceramic gradient composite) and internal layer (alloy structure steel or stainless steel) with the vacuum diffusion welding connection technology;

3) adjust matrix grain size and performance by Technology for Heating Processing.

Claims (3)

1. metal ceramic composite roll collar, it is characterized in that: this collars is a double-decker, and outer (1) is TiC based ceramic metal gradient composites spare, and internal layer (2) is metallic steel or stainless steel materials and parts.

2. according to the described metal ceramic composite roll collar of claim 1, it is characterized in that: described TiC based ceramic metal gradient composites, its component contains titanium carbide, nickel, chromium, molybdenum, titanium, aluminium, the proportioning of each component following (percentage by weight):

Titanium carbide (TiC) 35.0～55.0%

Nickel (Ni) 30.0～45.0%

Chromium (Cr) 5.0～12.0%

Molybdenum (Mo) 2.0～8.0%

Titanium (Ti) 1.0～2.0%

Aluminium (Al) 0.5～1.0%

3. according to the described metal ceramic composite roll collar of claim 2, it is characterized in that: add tungsten carbide, tungsten and titanium nitride, the content of tungsten carbide is 2.0～8.0%, and the content of tungsten is 2.0～6.0%, and the content of titanium nitride is 2.0～6.0%.

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