阅读说明：本技术 一种无氧铜杆结晶器 (Oxygen-free copper rod crystallizer ) 是由 吴冬宁 花思明 路超 王国迎 沈华 吴静 姚密峰 何宇 赵德胜 杨玉军 寇宗乾 于 2021-01-21 设计创作，主要内容包括：本发明涉及一种无氧铜杆结晶器,它包括一体式石墨模具,所述一体式石墨模具包括依次设置的大径圆柱段、锥段和小径圆柱段,所述大径圆柱段内设有空腔,所述空腔内设有凸台,所述凸台的顶部设有外螺纹,所述凸台内设有通孔,所述通孔向下延伸将锥段和小径圆柱段贯通。本发明大径圆柱段、锥段和小径圆柱段整体成型没有缝隙,不使用耐火泥填充缝隙,不用长时间烘烤、在铜液中不易结渣同时避免结晶器在一次冷却区——外螺纹接口处产生裂纹、裂口；锥段设置使结晶器插入保温炉时不会将铜液表面覆盖剂石墨磷片带至炉内同时炉内炉渣不易在大径圆柱段下方聚集结渣；双排液流孔极大地提高产量及生产效率,确保铜杆质量。(The invention relates to an oxygen-free copper rod crystallizer, which comprises an integrated graphite mold, wherein the integrated graphite mold comprises a large-diameter cylindrical section, a conical section and a small-diameter cylindrical section which are sequentially arranged, a cavity is arranged in the large-diameter cylindrical section, a boss is arranged in the cavity, an external thread is arranged at the top of the boss, a through hole is arranged in the boss, and the through hole extends downwards to communicate the conical section with the small-diameter cylindrical section. The large-diameter cylindrical section, the conical section and the small-diameter cylindrical section are integrally formed without gaps, refractory mortar is not used for filling the gaps, long-time baking is not needed, slag is not easy to form in copper liquid, and cracks and splits of a crystallizer at a primary cooling area, namely an external thread interface are avoided; the arrangement of the conical section ensures that when the crystallizer is inserted into the holding furnace, the copper liquid surface covering agent graphite phosphorus sheets cannot be brought into the furnace, and meanwhile, furnace slag in the furnace is not easy to accumulate and form slag below the large-diameter cylindrical section; the double liquid discharge holes greatly improve the yield and the production efficiency and ensure the quality of the copper rod.)

1. An oxygen-free copper rod crystallizer is characterized in that: the novel graphite mold comprises an integrated graphite mold (1), wherein the integrated graphite mold (1) comprises a large-diameter cylindrical section (1.1), a conical section (1.2) and a small-diameter cylindrical section (1.3) which are sequentially arranged, a cavity is arranged in the large-diameter cylindrical section (1.1), a boss (1.4) is arranged in the cavity, an external thread (1.5) is arranged at the top of the boss (1.4), a through hole (1.6) is arranged in the boss (1.4), and the conical section (1.2) and the small-diameter cylindrical section (1.1) are communicated through the through hole (1.6) in a downward extending mode.

2. The oxygen-free copper rod crystallizer of claim 1, wherein: the diameter cylinder section (1.3) bottom cover is equipped with graphite cap (2), diameter cylinder section (1.3) are equipped with drain hole (1.7) on, be equipped with drain hole (2.1) down on graphite cap (2).

3. The oxygen-free copper rod crystallizer of claim 1, wherein: and the upper drainage hole (1.7) is close to the bottom of the small-diameter cylindrical section (1.3) and exposes the graphite cap (2).

4. The oxygen-free copper rod crystallizer of claim 1, wherein: the external thread (1.5) is in threaded connection with the brass base (3), and the brass base (3) is connected with the cooling device (4).

5. The oxygen-free copper rod crystallizer of claim 1, wherein: the cooling device (4) comprises an inner tube (4.2), and the inner tube (4.2) is communicated with the through hole (1.6).

Technical Field

The invention relates to the technical field of copper alloy up-drawing continuous casting processing, in particular to an oxygen-free copper rod crystallizer.

Background

The oxygen-free copper rod is mainly produced by adopting an upward continuous casting method, when the copper alloy is continuously cast upward at present, as shown in figures 6-8, the crystallizer is formed by assembling a cylindrical graphite protective sleeve and a graphite mold, the cylindrical graphite protective sleeve is inserted into the upper end of the graphite mold, the cylindrical graphite protective sleeve is matched with the graphite mold, a gap between the cylindrical graphite protective sleeve and the graphite mold is filled with cement-resistant 6, and the oxygen-free copper rod has the following defects: 1. the crystallizer is not uniformly baked and can not be completely baked and dried; 2. the copper liquid splashes to hurt people when the furnace body copper liquid is inserted, so the furnace is unsafe; 3. the cylindrical graphite protective sleeve is a round flat bottom surface, and the graphite phosphorus sheet of the surface covering agent is easily brought to the position below the copper liquid surface; 4. the garbage brought into the lower copper liquid can be filled and coated with refractory clay along the periphery of the combination of the die and the protective sleeve to react rapidly, form slag and gather at the bottom of the protective sleeve; 5. cracks and splits are generated in a primary cooling area of the crystallizer, namely at the interface of the external thread of the graphite mold, and the internal quality of the upper guide rod is seriously influenced; 6. the service life of the up-drawing die is shortened; 7. after the long-time drawing, the phosphorus flake ash and the charcoal ash are easy to be brought into the copper rod; 8. the single-row liquid flow holes on the graphite cap reduce the flow of copper liquid, reduce the drawing speed, reduce the yield and have low production efficiency; 9. when the upper guide rod with special alloy content is continuously cast, the copper liquid is viscous, the flow rate is slow, and the primary cooling area of the graphite mold of the crystallizer cannot be completely filled, so that the quality of the copper rod is influenced.

Disclosure of Invention

The invention aims to overcome the defects and provides an oxygen-free copper rod crystallizer.

The purpose of the invention is realized as follows:

the utility model provides an oxygen-free copper rod crystallizer, it includes integral type graphite jig, integral type graphite jig is including the big footpath cylinder section, conic section and the path cylinder section that set gradually, be equipped with the cavity in the big footpath cylinder section, be equipped with the boss in the cavity, the top of boss is equipped with the external screw thread, be equipped with the through-hole in the boss, the through-hole downwardly extending link up conic section and path cylinder section.

Preferably, path cylinder section bottom cover is equipped with the graphite cap, path cylinder section is equipped with drain hole, be equipped with drain hole down on the graphite cap.

Preferably, the upper drainage hole is close to the bottom of the small-diameter cylindrical section, and the graphite cap is exposed.

Preferably, the external thread is in threaded connection with a brass base, and the brass base is connected with a cooling device.

Preferably, the cooling device comprises an inner tube, which communicates with the through hole.

The invention has the beneficial effects that:

the large-diameter cylindrical section, the conical section and the small-diameter cylindrical section are integrally formed without gaps, refractory mortar is not used for filling the gaps, long-time baking is not needed, slag is not easy to form in copper liquid, and cracks and splits of a crystallizer at a primary cooling area, namely an external thread interface are avoided; the arrangement of the conical section ensures that when the crystallizer is inserted into the holding furnace, the copper liquid surface covering agent graphite phosphorus sheets cannot be brought into the furnace, and meanwhile, furnace slag in the furnace is not easy to accumulate and form slag below the large-diameter cylindrical section; the double drainage holes can effectively increase the filtering flow of the copper liquid, the original drawing speed can be increased by 5-15 cm/min, the yield and the production efficiency are greatly improved, and the quality of the copper rod is ensured.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of an integrated graphite mold.

Fig. 3 is a schematic structural diagram of fig. 2.

Fig. 4 is a perspective view of the integrated graphite mold.

FIG. 5 is a schematic view of the oxygen-free copper rod production structure of the present invention.

Fig. 6 is a schematic view of a structure of a crystallizer of the prior art.

Fig. 7 is a schematic structural view of the cylindrical graphite protective sheath of fig. 6.

Fig. 8 is a schematic structural view of the graphite mold in fig. 6.

Wherein: an integrated graphite mold 1; 1.1 of a large-diameter cylindrical section; a cone section 1.2; a small-diameter cylindrical section 1.3; 1.4 of a boss; external threads 1.5; a through hole 1.6; an upper drainage orifice 1.7; a graphite cap 2; a lower drainage hole 2.1; a brass base 3; a cooling device 4; 4.1 of cooling water jacket; an inner tube 4.2; middle tube 4.3; an outer tube 4.4; a water inlet 4.5; a water outlet 4.6; refractory heat-insulating cotton 5; 6, refractory mortar; a cylindrical graphite protective sleeve 7; a graphite mold 8; graphite flakes 9.

Detailed Description

Referring to fig. 1-5, the invention relates to an oxygen-free copper rod crystallizer, which comprises an integrated graphite mold 1, wherein the integrated graphite mold 1 comprises a large-diameter cylindrical section 1.1, a conical section 1.2 and a small-diameter cylindrical section 1.3 which are sequentially arranged, a cavity is arranged in the large-diameter cylindrical section 1.1, a boss 1.4 is arranged in the cavity, an external thread 1.5 is arranged at the top of the boss 1.4, a through hole 1.6 is arranged in the boss 1.4, and the through hole 1.6 extends downwards to communicate the conical section 1.2 with the small-diameter cylindrical section 1.1.

The cover is equipped with graphite cap 2 to path cylinder section 1.3 bottom, be equipped with the internal thread in the graphite cap 2, path cylinder section 1.3 bottom spiro union is in graphite cap 2, path cylinder section 1.3 is equipped with drain hole 1.7, be equipped with drain hole 2.1 down on the graphite cap 2.

And the upper drainage hole 1.7 is close to the bottom of the small-diameter cylindrical section 1.3, and the graphite cap 2 is exposed.

The external screw thread 1.5 spiro union brass base 3, cooling device 4 is connected to brass base 3, fully cools off the copper pole.

The cooling device 4 comprises a cooling water jacket 4.1, an inner tube 4.2, a middle tube 4.3, an outer tube 4.4, a water inlet 4.5 and a water outlet 4.6, the inner tube 4.2 is communicated with a through hole 1.6, the inner tube 4.2 is used for forming a copper rod, the middle tube 4.3 is sleeved outside the inner tube 4.2, the outer tube 4.4 is sleeved outside the middle tube 4.3, a first cooling cavity is formed between the middle tube and the outer tube, a second cooling cavity is formed between the middle tube and the inner tube, the first cooling cavity is communicated with the bottom of the second cooling cavity, the top of the inner tube 4.2, the top of the middle tube 4.3 and the top of the outer tube 4.4 are connected with the cooling water jacket 4.1, the water inlet 4.5 and the water outlet 4.6 are arranged on the cooling water jacket 4.1, and cooling water flows out from the water outlet 4.6 after sequentially entering the first cooling cavity and the second cooling cavity from the.

Be equipped with fire-resistant heat preservation cotton 5 in the cavity, the lateral wall and the bottom of cavity are covered to fire-resistant heat preservation cotton 5, and the bottom and the 5 contacts of fire-resistant heat preservation cotton of brass base 3, the bottom of inner tube 4.2, the bottom of well pipe 4.3, the bottom of outer tube 4.4 set up between fire-resistant heat preservation cotton and brass base, and the protection brass base is not destroyed by high temperature.

The conical section 1.2 enables the crystallizer not to bring copper liquid surface covering agent graphite phosphorus sheets 9 into the furnace when inserted into the holding furnace, meanwhile, slag is not easy to gather and form slag below the large-diameter cylindrical section 1.1, the conical section 1.2 and the small-diameter cylindrical section 1.3 are integrally formed without gaps, fire clay 6 is not needed to be used for filling and smearing, over-long baking is not needed, slag is not easy to form in copper liquid, cracks and cracks are avoided from being generated at a primary cooling area, namely an external thread 1.5 interface of the crystallizer, the crystallizer is provided with double drainage holes, wherein the upper drainage hole 1.7 is used for increasing the flowing of the copper liquid, the guiding speed is increased by 5-15 cm/min, the quality of a copper rod is ensured, the lower drainage hole 2.1 is arranged around a graphite cap to filter residues of the copper liquid, meanwhile, the copper liquid can be conveniently pumped out completely without waste when the copper liquid is pumped out by the furnace body.

The working principle is as follows:

the large-diameter cylindrical section 1.1, the conical section 1.2 and the small-diameter cylindrical section 1.3 are integrally formed without gaps, refractory mortar is not used for filling the gaps, long-time baking is not needed, slag is not easy to form in copper liquid, and cracks and splits are prevented from being generated at the interface of the primary cooling area and the external thread of the crystallizer; the arrangement of the conical section ensures that when the crystallizer is inserted into the holding furnace, the copper liquid surface covering agent graphite phosphorus sheets cannot be brought into the furnace, and meanwhile, furnace slag in the furnace is not easy to accumulate and form slag below the large-diameter cylindrical section; the double drainage holes can effectively increase the filtering flow of the copper liquid, the original drawing speed can be increased by 5-15 cm/min, the yield and the production efficiency are greatly improved, and the quality of the copper rod is ensured.

In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.