CN1453086A - Lathe tool for roll calibre and its manufacture and repair method - Google Patents

Abstract

The lathe tool for roller calibre has hard alloy tool blade brazed to the carbon steel tool bar. During its manufacture and repair, the carbon steel tool bar is machined and cleaned to form slot and the hard alloy tool blade is brazed to the carbon steel tool bar. The lathe tool with wear resistant hard alloy tool blade has long service life and is suitable for lathing 70Mn cast steel roller, modular cast iron roller, chill hardened cast iron roller, semi-steel roller, high NiCr roller, etc.

Description

A kind of lathe tool for roll calibre and manufacturing, restorative procedure

Technical field

The present invention relates to the cutter of a kind of metal processing usefulness and manufacturing, restorative procedure, especially relate to a kind of lathe tool for roll calibre of special roller lathe and manufacturing, restorative procedure.

Background technology

At present, lathe tool for roll calibre generally adopts knife bar and high speed steel W 18Cr4V alloy blade welding or knife bar and high-speed steel alloy blade borax and ferromanganese powder high temperature bonding.The pass lathe tool is not wide at width, and as shown in Figure 1, the alloy blade wider width uses the alloy amount more.Chinese patent notification number 1007966, on July 31 1991 day for announcing, name is called the method for production that discloses the compound form tool of a kind of high-speed steel in the preparation method of the compound form tool of a kind of high-speed steel.Be to make the high-speed steel composite plate by rolling or blast complex method, through steps such as plasma cutting, machined, aligning, heat treatments, make high-speed steel composite plate cutter again with high-speed steel and straight carbon steel.The high-speed steel roll pass lathe tool hardness of making of above-mentioned several method is low, wear no resistance, the cutting ability of high-speed steel tool is not as hard alloy cutter, and stock-removing efficiency is lower, the cutting high-hardness roller, as high Minvar roll, ferrosteel roll, then high-speed steel tool is difficult to be competent at.Therefore, be necessary that breaker roll pass lathe tool improves.

Summary of the invention

Technical problem to be solved by this invention is, easily wearing and tearing and alloy blade wide use steel alloy many problem low at high-speed steel roll pass lathe tool hardness, a kind of hardness height is provided, lathe tool for roll calibre with high-wearing feature, this lathe tool for roll calibre adopts the high carbide chip of hardness, the narrower pass turning insert of carbide chip width is wide at width, the use steel alloy is few, can also save nearly half steel alloy when the assurance wear surface is constant.For this reason, the present invention's method that also will provide a kind of manufacturing, repair this lathe tool for roll calibre.

Technical scheme of the present invention is; A kind of lathe tool for roll calibre, form by carbon steel knife bar and carbide chip, soldering carbide chip on the carbon steel knife bar, the carbon steel knife bar is by carbon steel manufacturing or worn out lathe tool for roll calibre, carbide chip width 15-35mm, the pass lathe tool is wide at width, and carbide chip thickness is 6mm or more than the 6mm, carbon steel knife bar cutter groove and carbide chip cooperation place roughness are more than 5.Opening the 4-8 bar wide on the cutter groove is 2.5mm ditch 3 deeply respectively, with carbide chip contacts side surfaces position step 4 is arranged on knife bar, is a faying face between carbon steel knife bar and carbide chip.

The method of the lathe tool for roll calibre of a kind of manufacturing, reparation, this method is as follows:

1) lathe tool for roll calibre carbon steel knife bar 1 lip-deep oxide is cleaned down, with the bonding position of acetone difference cleaning roller pass lathe tool, carbide chip 2;

2) scolder is put into insert groove, sprinkle borax equably, put carbide chip, weld the place of meeting except that sprinkling one deck borax again at carbide chip end face and side, lathe tool for roll calibre is put into heating furnace, slowly heat up when treating that cutter is heated to brazing temperature earlier during heating, brazing temperature is than the high 30-40 of scolder fusing point ℃, one side keeps temperature simultaneously to carry out deslagging, during deslagging, with red copper bar carbide chip is moved back and forth 2-3 time along the groove nest, to get rid of slag in the weld seam by the time occurred copper liquid on the blade of red heat, take out carbide-tipped lathe tool, correction position compresses blade and then sends to tempering;

3) put into 220-250 ℃ of stove tempering 6-8 hour after the soldering immediately.

Lathe tool for roll calibre of the present invention compared with prior art, advantage is that to reduce the alloy blade consumption few, it is good to have high hardness wearability, especially red hardness, long service life.Improve 3～5 times than high-speed steel roll pass lathe tool its comprehensive service life, and this lathe tool for roll calibre is applicable to turning 70Mn cast steel roll, spheroidal graphite roll, chilled cast iron roll, ferrosteel roll, high-ni-cr roll, surfacing roll etc.

Description of drawings

Fig. 1 is existing lathe tool for roll calibre front view;

Fig. 2 is the front view of lathe tool for roll calibre of the present invention;

Fig. 3 is the cutaway view of roll type lathe tool shown in Figure 2;

Fig. 4 is a carbon steel knife bar cutaway view;

Fig. 5 is a carbon steel knife bar vertical view;

Fig. 6 is Fig. 5 A-A profile;

Fig. 7 is carbide chip figure.

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing.

As Fig. 2, Fig. 3, Fig. 4 Fig. 5, Fig. 6, shown in Figure 7, select carbon steel knife bar 1, soldering carbide chip 2 on carbon steel knife bar 1, carbide chip 2 thickness are 10mm, the pass lathe tool is wide at width, carbide chip width 25mm, carbon steel knife bar and carbide chip cooperation place roughness 5, carbon steel knife bar 1 are steel plate or worn out lathe tool for roll calibre.Opening the 4-8 bar wide on the cutter groove is 2.5mm ditch 3 deeply respectively, with carbide chip contacts side surfaces position step 4 is arranged on knife bar, is a faying face between carbon steel knife bar and carbide chip.

Manufacturing of the present invention, the method for repairing this lathe tool for roll calibre are as follows:

1) lathe tool for roll calibre carbon steel knife bar 1 lip-deep oxide is cleaned down, with the bonding position of acetone difference cleaning roller pass lathe tool, carbide chip 2;

2) scolder is put into insert groove, sprinkle borax equably, put carbide chip, weld the place of meeting except that sprinkling one deck borax again at carbide chip end face and side, lathe tool for roll calibre is put into heating furnace, slowly heat up when treating that cutter is heated to brazing temperature earlier during heating, brazing temperature is higher 40 ℃ than scolder fusing point, one side keeps temperature simultaneously to carry out deslagging, during deslagging, with red copper bar carbide chip is moved back and forth 3 times along the groove nest, to get rid of slag in the weld seam by the time occurred copper liquid on the blade of red heat, take out carbide-tipped lathe tool, correction position compresses blade and then sends to tempering;

3) put into 230 ℃ of stove tempering 7 hours after the soldering immediately.

Claims (4)

1, a kind of lathe tool for roll calibre, form by carbon steel knife bar and blade, it is characterized in that: go up soldering carbide chip (2) at carbon steel knife bar (1), carbon steel knife bar (1) is that carbon steel is made or worn out lathe tool for roll calibre, the width of carbide chip (2) is 15-35mm, and the pass lathe tool is wide at width.

2, according to the described lathe tool for roll calibre of claim 1, it is characterized in that: carbon steel knife bar (1) and carbide chip (2) cooperation place roughness are more than 5.

3, lathe tool for roll calibre according to claim 1, the thickness that it is characterized in that said carbide chip (2) is 6mm or more than the 6mm, opening the 4-8 bar wide on the cutter groove deeply respectively is 2.5mm ditch (3), on knife bar, step (4) is arranged with carbide chip contacts side surfaces position, between carbon steel knife bar (1) is gone up carbide chip (2) be one in conjunction with the plane.

4, a kind of manufacturing, the method for repairing the described rolling mill roll pass of claim 1 lathe tool is characterized in that this method is as follows:

1) the lip-deep oxide of lathe tool for roll calibre carbon steel knife bar (1) is cleaned down, with the bonding position of acetone difference cleaning roller pass lathe tool, carbide chip (2);

2) scolder is put into insert groove, sprinkle borax equably, put carbide chip, weld the place of meeting except that sprinkling one deck borax again at carbide chip end face and side, lathe tool for roll calibre is put into heating furnace, slowly heat up when treating that cutter is heated to brazing temperature earlier during heating, brazing temperature is than the high 30-40 of scolder fusing point ℃, one side keeps temperature simultaneously to carry out deslagging, during deslagging, with red copper bar carbide chip is moved back and forth 2-3 time along the groove nest, to get rid of slag in the weld seam by the time occurred copper liquid on the blade of red heat, take out carbide-tipped lathe tool, correction position compresses blade and then sends to tempering;

3) put into 220-250 ℃ of stove tempering 6-8 hour after the soldering immediately.

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