阅读说明：本技术 一种电子束冷床熔炼炉多材质通用凝壳的处理方法 (A kind of processing method of the general scull of the more materials of electron beam cold hearth melting furnace ) 是由 裴腾 李渤渤 刘茵琪 朱俊杰 蒋林凡 于 2019-08-13 设计创作，主要内容包括：本发明公开一种电子束冷床熔炼炉多材质通用凝壳的处理方法,包括以下步骤：一、当前材质原料熔炼结束后不更换凝壳,准备待熔材料原料；二、打开电子枪电子束图形设定为覆盖全部凝壳范围,将熔池周围凝壳上部的当前材质全部余料熔化；三、跳转至排空步骤,熔化冷床区域熔池中的熔体先排入精炼冷床区域,熔体沿之流动排入分流冷床与坩埚,排空至流道口位置以下不能排出为止；四、取待熔材质原料下料,熔化的待熔材质原料迅速填充各区域冷床；五、跳转至排空步骤,将待熔材质的熔融液体排入坩埚中,排空至流道口位置以下；六、重复步骤四步骤五2~3次,使得凝壳上部成分达到待熔材质的成分；七、转入正常熔炼步骤,进行待熔材质原料的连续下料和熔炼。(The present invention discloses a kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, comprising the following steps: and one, be changed without scull after current material raw material melting, prepare material feedstock fusion；Two, it opens electron gun electron beam graph to be set as covering whole scull ranges, the current material whole clout on scull top around molten bath is melted；Three, jump to evacuation step, melt the melt in the molten bath of cold bed region and be first discharged into refining cold bed region, melt along flowing be discharged into and shunt cold bed and crucible, empty to until runner mouth position or less cannot be discharged；Four, material raw material blanking fusion is taken, the material raw material fusion of fusing fills rapidly each region cold bed；Five, evacuation step is jumped to, the melt liquid of material fusion is discharged into crucible, empties to runner mouth position or less；Six, it repeats step 4 step 52 ~ 3 times, so that scull upper components reach the ingredient of material fusion；Seven, it is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.)

1. a kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, it is characterised in that: mainly include following step It is rapid:

Step 1: material raw material preparation fusion:

It is changed without scull after current material raw material melting, prepares the raw material that 300-500Kg waits for melt material；

Step 2: scull is cleared up:

Electron gun is opened, cleanup step is jumped to, electron beam graph is set as covering whole scull ranges, and electron gun is all by molten bath Enclose the current material whole clout fusing on scull top；

Step 3: molten bath empties:

Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, the melt melted in the molten bath of cold bed region is first It is discharged into refining cold bed region, is emptied to until runner mouth position or less cannot be discharged, cold bed regional Electronic beam figure will be refined Shape is set as narrow bar in evacuation step, melt along flowing be discharged into and shunt cold bed and crucible, equally empty to runner mouth position Until cannot being discharged below；

Step 4: material melting sources fusion:

Electron gun keeps high emission electric current, jumps to fusing step, takes the material raw material fusion of 100-200Kg in step 1 from original Expect entrance blanking, the material raw material fusion of fusing fills rapidly each region cold bed, and fusing finishes；

Step 5: molten bath empties:

Evacuation step is jumped to, the melt liquid of material fusion in molten bath is discharged into crucible in order, empties to runner mouth position It sets following；

Step 6: repeated melting and emptying:

Step 4 and step 52 ~ 3 times are repeated, so that scull upper components reach the ingredient of material fusion；

Step 7: normal smelting:

It is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.

2. the processing method of the general scull of a kind of more materials of electron beam cold hearth melting furnace according to right 1, it is characterised in that: In the step 1 to the raw material of melt material be mixed bulk cargo state.

3. the processing method of the general scull of a kind of more materials of electron beam cold hearth melting furnace according to right 1, it is characterised in that: Material raw material fusion is in a manner of feeding vertical from feed(raw material)inlet fast blanking in the step 4.

4. the processing method of the general scull of a kind of more materials of electron beam cold hearth melting furnace according to right 1, it is characterised in that: Electron gun parameter and cold bed molten bath keep 5-15min after melting in the step 4.

Technical field

The present invention relates to a kind of technologies of preparing of electron-beam smelting ingot casting, and in particular to a kind of electron beam cold hearth melting furnace is more The processing method of the general scull of material.

Background technique

Electron-beam cold bed furnace melting (EBCHM) is under vacuum conditions, to be carried out using the heat that beam bombardment generates high The vacuum smelting equipment of warm refractory metal melting and purification.The smelting efficiency of electron beam cold hearth melting is high, can the big rule of melting acquisition Circular ingot, the slab ingot of lattice.For high temperature refractories such as such as titanium, zirconium, niobiums, by electron beam cold hearth melting obtain ingot casting and Corresponding processing material, has high-efficient, at low cost, high-quality advantage, has at present been in gradually to substitute becoming for traditional smelting technology Gesture.

It is equipped with water cooling solid brass bed in electron beam furnace, is generally divided into fusing cold bed, refining cold bed, shunts cold bed and crucible area Domain, beam bombardment formation temperature field is so that melt flow stream passes through each region crystalline forming.During melt flows with each area It is separated with scull between the water cooling solid brass bed in domain, also there is scull protection at runner, the high temperature to avoid electron beam or melt is straight Cold bed injury device is contacted, pollution of the cooling bed material for melt raw material is also avoided.

The electron-beam cold bed furnace that industrial production uses is mostly in 2400KW or more, to pursue big specification, high efficiency and long melting Period, cold bed and scull are in big specification trend development.Large-sized cold bed scull, the surface area for refining removal of impurities is bigger, refining effect Fruit is more preferable, while can have longer melting cycle to carry out more heat meltings, it is not necessary to which cold bed is cleared up in frequent blow-on, to improve effect Rate promotes production capacity.Larger specification electron-beam cold bed furnace scull weight reaches nearly 2000Kg.

Currently, industry, which generallys use every kind of trade mark, needs a kind of scull, and in addition to single scull is at high cost, the gold of the different trades mark The melting of category or alloy, needs to carry out the switching of scull, production cost higher cost.The switching of scull will to vacuum melting room into The broken empty deflation of row, and working chamber is cleared up, the scull of the corresponding trade mark is replaced later.Production operation is nearly identical to conventional prepurging mistake Journey, replacement process and preparation process is often 48 hours time-consuming or more before vacuumizing equal meltings again influence production capacity very big.Scull Most of under water cooling condition in melting is still solid-state, and only small part includes in the molten bath above scull, and in molten bath exhausted big portion It is divided into the raw material of fusing, therefore schematic diagram by certain process as shown in Figure 1, can replace the scull material in molten bath Ingredient, so that the switching melting trade mark is possibly realized without changing scull.The general procedure process for realizing scull, then can be improved 10 tons of -50 tons of production capacities when switching material every time, while also reducing scull material cost itself and cleaning replacement cost.

Summary of the invention

To solve the above problems, the present invention provides a kind of processing side of the general scull of more materials of electron beam cold hearth melting furnace Method, this method utilizes beam energy in the setting and corresponding smelting technology of different zones, so that the difference of similar metal Alloy can be changed without scull in same melting cycle and carry out continuous melting, reduce scull and prepare quantity, reduce cost, together When avoid blowing out replace scull, reduce stokehold prepare, significantly improve production efficiency.

The present invention is achieved through the following technical solutions:

A kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, mainly comprises the steps that

Step 1: material raw material preparation fusion:

It is changed without scull after current material raw material melting, prepares the raw material that 300-500Kg waits for melt material；

Step 2: scull is cleared up:

Electron gun is opened, cleanup step is jumped to, electron beam graph is set as covering whole scull ranges, and electron gun is all by molten bath Enclose the current material whole clout fusing on scull top；

Step 3: molten bath empties:

Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, the melt melted in the molten bath of cold bed region is first It is discharged into refining cold bed region, is emptied to until runner mouth position or less cannot be discharged, cold bed regional Electronic beam figure will be refined Shape is set as narrow bar in evacuation step, melt along flowing be discharged into and shunt cold bed and crucible, equally empty to runner mouth position Until cannot being discharged below；

Step 4: material melting sources fusion:

Electron gun keeps high emission electric current, jumps to fusing step, takes the material raw material fusion of 100-200Kg in step 1 from original Expect entrance blanking, the material raw material fusion of fusing fills rapidly each region cold bed, and fusing finishes；

Step 5: molten bath empties:

Evacuation step is jumped to, the melt liquid of material fusion in molten bath is discharged into crucible in order, empties to runner mouth position It sets following；

Step 6: repeated melting and emptying:

Step 4 and step 52 ~ 3 times are repeated, so that scull upper components reach the ingredient of material fusion；

Step 7: normal smelting:

It is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.

It further, is mixed bulk cargo state to the raw material of melt material in the step 1.

Further, in the step 4 material raw material fusion in a manner of feeding vertical from feed(raw material)inlet fast blanking.

Further, electron gun parameter and cold bed molten bath keep 5-15min after melting in the step 4.

The beneficial effects of the present invention are:

(1) conventional melting produces different metals raw material, needs to make corresponding more set sculls, and uses more materials of the invention The method that matter shares scull, can save the cost of wherein one or more sets sculls；

(2) replacement of scull needs blowing out to deflate in the prior art, needs to vacuumize baker after replacement again, and the time of consuming exists 24 hours or more, on production capacity influence it is very big, and use share scull method, by 1 ~ 2 hour operation can continuous production, Greatly improve production efficiency；

(3) operation of the present invention is simple, can complete this by the setting of electron gun technological parameter and multiple blanking and emptying The operation of method, production application are easy；

(4) quality of melting ingot casting of the present invention is unaffected, and only top small part is melted among cold bed molten bath scull, in molten bath The overwhelming majority is the material raw material fusion of fusing, is melted and is emptied by multiple blanking, molten bath can be made to reach needs The ingredient of material fusion can't have an impact in subsequent continuous smelting；

It deflates and replacement scull in conclusion the present invention may be implemented to be not required to blow-on between the meltings of a variety of unlike material raw materials, Can direct continuous smelting, reduce the cost of scull significantly, improve production efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of general scull；

Fig. 2 is 6/200/3600 type electron-beam cold bed furnace cold bed schematic diagram of ALD EBCHR of the present invention.

Specific embodiment

A kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, mainly comprises the steps that

Step 1: material raw material preparation fusion:

It is changed without scull after current material raw material melting, prepares the raw material that 300-500Kg waits for melt material；

Step 2: scull is cleared up:

Electron gun is opened, cleanup step is jumped to, electron beam graph is set as covering whole scull ranges, and electron gun is all by molten bath Enclose the current material whole clout fusing on scull top；

Step 3: molten bath empties:

Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, the melt melted in the molten bath of cold bed region is first It is discharged into refining cold bed region, is emptied to until runner mouth position or less cannot be discharged, cold bed regional Electronic beam figure will be refined Shape is set as narrow bar in evacuation step, melt along flowing be discharged into and shunt cold bed and crucible, equally empty to runner mouth position Until cannot being discharged below；

Step 4: material melting sources fusion:

Electron gun keeps high emission electric current, jumps to fusing step, takes the material raw material fusion of 100-200Kg in step 1 from original Expect entrance blanking, the material raw material fusion of fusing fills rapidly each region cold bed, and fusing finishes；

Step 5: molten bath empties:

Evacuation step is jumped to, the melt liquid of material fusion in molten bath is discharged into crucible in order, empties to runner mouth position It sets following；

Step 6: repeated melting and emptying:

Step 4 and step 52 ~ 3 times are repeated, so that scull upper components reach the ingredient of material fusion；

Step 7: normal smelting:

It is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.

It further, is mixed bulk cargo state to the raw material of melt material in the step 1.

Further, in the step 4 material raw material fusion in a manner of feeding vertical from feed(raw material)inlet fast blanking.

Further, electron gun parameter and cold bed molten bath keep 5-15min after melting in the step 4.

The following is a clear and complete description of the technical scheme in the embodiments of the invention.