CN105693247A - Production method of high-efficiency, energy-saving and environment-friendly air-arc gouging carbon electrode - Google Patents

Abstract

The invention belongs to the technical field of hot processing and discloses a production method of a high-efficiency, energy-saving and environment-friendly air-arc gouging carbon electrode. For the air-arc gouging carbon electrode produced by the technology, the electrical resistivity can be guaranteed to be below 8 omega.m and is reduced by 2 to 2.5 times compared with the electrical resistivity of a copper-plated black carbon electrode, the porosity is reduced to 30 to 40 percent or even below 10 percent, and the volume density reaches 1.70g/cm<3> which is improved by 8 to 10 percent compared with that of the copper-plated black carbon electrode. Compared with the copper-plated black carbon electrode in operation efficiency, the high-efficiency, energy-saving and environment-friendly air-arc gouging carbon electrode has the advantages that the electrode consumption can be reduced by 20 to 40 percent at the same work amount, the service life is prolonged by 20 to 50 percent and the consumption of electric energy is reduced by 15 percent or over 15 percent, so the air-arc gouging carbon electrode becomes a veritable high-efficiency, energy-saving and environment-friendly air-arc gouging carbon electrode. According to the production method disclosed by the invention, technical theoretical basis is matched with production process measures, and a physical inherent law penetrates through the whole process of product production, so that copperizing-free air-arc gouging carbon electrode realizes high-efficiency, energy-saving and environment-friendly breakthrough, significant social benefits and predominant economic benefits of enterprises are obtained, and the results of mutual benefit and win-win of use and satisfaction for users can be realized.

Description

A kind of efficient, energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method

Technical field

The present invention realizes the change without copper facing of carbon arc gouge carbon rod, is specifically related to a kind of efficient, energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method, belongs to arc heat processing conduction carbon resistance rod new material technology field。

Background technology

At present, domestic production carbon arc gouge carbon rod, with graphite powder, crystalline flake graphite and coal tar pitch for main raw material(s), complete through dispensing, kneading, extruding, roasting, cleaning, cut-out, copper facing operation。The air-arc cutting principle of carbon arc gouge carbon rod is to utilize the high temperature electric current produced between charcoal pole and metal, Zone Heating For Metal to fusing superheat state, utilize compressed-air actuated high velocity air that these fusing metals are blown off, thus realizing the planing of base material metal, cutting, punching etc. simultaneously。In this way weld seam is chosen root of weld, opens cut, is dug out weld defect position, defect in the cleaning burr of cast(ing) surface, flash, rising head, cast gate and foundry goods, cutting stainless steel punches on plate or sheet workpiece, the reinforcement etc. of planing face of weld, is widely used in the manufacturing industry such as shipbuilding, metallurgy, chemical industry, machinery。During carbon arc gouge operation, increase and use electric current can improve planing cutting speed, and the more smooth scope of operation can be obtained。During normal operation, arc temperature reaches 3500 DEG C, and when electric current is excessive, carbon rod head is easily rubescent, and copper facing skin has melted black wood charcoal rod only remaining exposed in carbon rod head up 2 centimetres for scaling loss Cheng Du。If black wood charcoal rod the more high black wood charcoal rod presented of resistivity highly more long even up to 46 centimetres, more aggravate carbon rod side oxidation rate, cause exposed part attenuate head become point just cannot use。Therefore, the terminal use of carbon arc gouge carbon rod and operative employee are ready to use electric current height antioxidative product again allowable。

Summary of the invention

The technical problem to be solved in the present invention overcomes existing defect, it is provided that a kind of efficient, energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method, it is possible to effectively solve the problem in background technology。

In order to solve above-mentioned technical problem, the invention provides following technical scheme:

The present invention provides a kind of efficient, energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method, and step is as follows:

Step one: buy ultra high power artificial graphite electrode joint powder and bulk graphite powder, its mother metal resistivity is all female in 5.0 Europe. below rice。Crystalline flake graphite purity is with 96 98%, and its powder is than below resistance 80 Europe mother。Superconductive carbon black purity more than 99%, resistivity beats up female rice scope 0.8 1.0, and the solute being used as coal tar pitch solution of granule order number-1200 uses。

Step 2: owing to copper facing carbon rod considers that adhesive force carbon rod necessity of copper sheet and carbon rod has the open pore of certain Cheng Du, be otherwise easily generated decortication。But for more few without the copper facing gouge carbon rod porosity be conducive to increase On current net sectional area, so raw material is all with fine grained ultra-fine grain powder material. its proportioning and granularmetric composition are as follows；Ultrahigh power graphite powder accounts for the 80 85% of solid material weight, wherein granularity 0.1～-0.2 millimeter account for 15 20%, 0～-0.1 millimeter account for 80～85%。Crystalline flake graphite fineness-80 orders, purity is with 96% and 98%。Purity 96% is that Physical produces, and purity 98% is that chemical method produces, and both one can meet the final goal of this patent product。

Step 3: the addition of superconductive carbon black is the 3 5% of coal tar pitch weight, 50 55% that the addition (not including white carbon black) of coal tar pitch is solid material, softening point is with 80--85 DEG C. and additive Cosan, its consumption is the 0.5 1.0% of coal tar pitch。Reinforced order is to be initially charged graphite powder and crystalline flake graphite, it is dry mixed addition purity 99.9% Cosan after being warming up to 90--100 DEG C, add the coal tar pitch solution dissolving white carbon black, wet mixing takes the dish out of the pot for 45～60 minutes, the thickener Vertical Oil press taken the dish out of the pot is pressed into the block of regulation, and is contained in the paste cylinder of horizontal press and extrudes。The purpose of briquetting is in that to shorten to stick with paste in cylinder makes firm by ramming thickener and compacting time, the thickener being compacted generally carries out reducing through taper reducing to the horn mouth of mould mouth, thickener is through this section due to reducing ratio greatly, the relative displacement of granule and the ordered arrangement of granule are insufficient, carry out ordered arrangement in order to more effective, improve the asphalt membrane of formation between granule further and evenly, more improve the cementation of Colophonium, increase consistency, in horn mouth die mould mouthpiece, be provided with comb tablet device。

Step 4；Efficiently, the resistivity of energy saving and environment friendly carbon rod reach below 8 Europe mother's rice, the working strength of ratio copper facing entirety carbon rod On current improves 20%, and power consumption reduces by 15%。Although not copper facing; but surface impregnation conduction anti-oxidant protective agent; at room temperature solidify stable; oxidation resistance temperature exceeds 5 600 DEG C than the fusing point of copper; prevent oxygenation efficiency from reaching more than 95% under 1700 DEG C of hot conditionss; surveying face oxidization burning loss than copper facing carbon rod exposed part and reduce more than half, service life extends more than 20%。

The present invention reaches to provide the benefit that: a kind of efficient, energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method, by technical know-how according to and production technology measure match, the inherent law of physical property is through the overall process of production, make to reach efficiently without copper facing carbon arc gouge carbon rod, energy-saving and environmental protection type breaks through, it is that social benefit is obvious, Business Economic Benefit highlights, it is possible to bring user to use satisfied mutually beneficial double; two results being full of。

Detailed description of the invention

The following is and the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention。

Embodiment: the present invention is a kind of efficiently, energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method, specifically comprises the following steps that

Step one: buy ultra high power artificial graphite electrode joint powder and bulk graphite powder, its mother metal resistivity is all female in 5.0 Europe. below rice。Crystalline flake graphite purity is with 96 98%, and its powder is than below resistance 80 Europe mother。Superconductive carbon black purity more than 99%, resistivity beats up female rice scope 0.8 1.0, and the solute being used as coal tar pitch solution of granule order number-1200 uses。

Step 2: owing to copper facing carbon rod considers that adhesive force carbon rod necessity of copper sheet and carbon rod has the open pore of certain Cheng Du, be otherwise easily generated decortication。But for more few without the copper facing gouge carbon rod porosity be conducive to increase On current net sectional area, so raw material is all with fine grained ultra-fine grain powder material. its proportioning and granularmetric composition are as follows；Ultrahigh power graphite powder accounts for the 80 85% of solid material weight, wherein granularity 0.1～-0.2 millimeter account for 15 20%, 0～-0.1 millimeter account for 80～85%。Crystalline flake graphite fineness-80 orders, purity is with 96% and 98%。Purity 96% is that Physical produces, and purity 98% is that chemical method produces, and both one can meet the final goal of this patent product。

Step 3: the addition of superconductive carbon black is the 3 5% of coal tar pitch weight, 50 55% that the addition (not including white carbon black) of coal tar pitch is solid material, softening point is with 80--85 DEG C. and additive Cosan, its consumption is the 0.5 1.0% of coal tar pitch。Reinforced order is to be initially charged graphite powder and crystalline flake graphite, it is dry mixed addition purity 99.9% Cosan after being warming up to 90--100 DEG C, add the coal tar pitch solution dissolving white carbon black, wet mixing takes the dish out of the pot for 45～60 minutes, the thickener Vertical Oil press taken the dish out of the pot is pressed into the block of regulation, and is contained in the paste cylinder of horizontal press and extrudes。The purpose of briquetting is in that to shorten to stick with paste in cylinder makes firm by ramming thickener and compacting time, the thickener being compacted generally carries out reducing through taper reducing to the horn mouth of mould mouth, thickener is through this section due to reducing ratio greatly, the relative displacement of granule and the ordered arrangement of granule are insufficient, carry out ordered arrangement in order to more effective, improve the asphalt membrane of formation between granule further and evenly, more improve the cementation of Colophonium, increase consistency, in horn mouth die mould mouthpiece, be provided with comb tablet device。

Step 4；Efficiently, the resistivity of energy saving and environment friendly carbon rod reach below 8 Europe mother's rice, the working strength of ratio copper facing entirety carbon rod On current improves 20%, and power consumption reduces by 15%。Although not copper facing; but surface impregnation conduction anti-oxidant protective agent; at room temperature solidify stable; oxidation resistance temperature exceeds 5 600 DEG C than the fusing point of copper; prevent oxygenation efficiency from reaching more than 95% under 1700 DEG C of hot conditionss; surveying face oxidization burning loss than copper facing carbon rod exposed part and reduce more than half, service life extends more than 20%。

It should be noted that, the present invention is a kind of efficient, energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method, during work, by technical know-how according to and production technology measure match, the inherent law of physical property, through the overall process of production, makes to reach efficiently without copper facing carbon arc gouge carbon rod, energy-saving and environmental protection type breaks through, and is that social benefit is obvious, Business Economic Benefit highlights, it is possible to bring user to use satisfied mutually beneficial double; two results being full of。

Last it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, although the present invention being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature carries out equivalent replacement。All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。

Claims (1)

1. efficient, an energy-saving and environmental protection type carbon arc gouge carbon rod manufacture method, it is characterised in that specifically comprise the following steps that

Step one: buy ultra high power artificial graphite electrode joint powder and bulk graphite powder, its mother metal resistivity is all female in 5.0 Europe. below rice。Crystalline flake graphite purity is with 96 98%, and its powder is than below resistance 80 Europe mother。Superconductive carbon black purity more than 99%, resistivity beats up female rice scope 0.8 1.0, and the solute being used as coal tar pitch solution of granule order number-1200 uses；

Step 2: owing to copper facing carbon rod considers that adhesive force carbon rod necessity of copper sheet and carbon rod has the open pore of certain Cheng Du, be otherwise easily generated decortication。But for more few without the copper facing gouge carbon rod porosity be conducive to increase On current net sectional area, so raw material is all with fine grained ultra-fine grain powder material. its proportioning and granularmetric composition are as follows；Ultrahigh power graphite powder accounts for the 80 85% of solid material weight, wherein granularity 0.1～-0.2 millimeter account for 15 20%, 0～-0.1 millimeter account for 80～85%。Crystalline flake graphite fineness-80 orders, purity is with 96% and 98%。Purity 96% is that Physical produces, and purity 98% is that chemical method produces, and both one can meet the final goal of this patent product；

Step 3: the addition of superconductive carbon black is the 3 5% of coal tar pitch weight, 50 55% that the addition (not including white carbon black) of coal tar pitch is solid material, softening point is with 80--85 DEG C. and additive Cosan, its consumption is the 0.5 1.0% of coal tar pitch。Reinforced order is to be initially charged graphite powder and crystalline flake graphite, it is dry mixed addition purity 99.9% Cosan after being warming up to 90--100 DEG C, add the coal tar pitch solution dissolving white carbon black, wet mixing takes the dish out of the pot for 45～60 minutes, the thickener Vertical Oil press taken the dish out of the pot is pressed into the block of regulation, and is contained in the paste cylinder of horizontal press and extrudes。The purpose of briquetting is in that to shorten to stick with paste in cylinder makes firm by ramming thickener and compacting time, the thickener being compacted generally carries out reducing through taper reducing to the horn mouth of mould mouth, thickener is through this section due to reducing ratio greatly, the relative displacement of granule and the ordered arrangement of granule are insufficient, carry out ordered arrangement in order to more effective, improve the asphalt membrane of formation between granule further and evenly, more improve the cementation of Colophonium, increase consistency, in horn mouth die mould mouthpiece, be provided with comb tablet device；

Step 4；Efficiently, the resistivity of energy saving and environment friendly carbon rod reach below 8 Europe mother's rice, the working strength of ratio copper facing entirety carbon rod On current improves 20%, and power consumption reduces by 15%。Although not copper facing; but surface impregnation conduction anti-oxidant protective agent; at room temperature solidify stable; oxidation resistance temperature exceeds 5 600 DEG C than the fusing point of copper; prevent oxygenation efficiency from reaching more than 95% under 1700 DEG C of hot conditionss; surveying face oxidization burning loss than copper facing carbon rod exposed part and reduce more than half, service life extends more than 20%。