CN116586797A - Welding method for steel wire rope and loquat head - Google Patents

Abstract

The application discloses a method for welding a steel wire rope and a loquat head, which comprises the steps of penetrating the tail end of the steel wire rope from the head and the tail parts of the loquat to be connected, splitting the tail end of the steel wire rope into scattered steel wires, sealing the tail parts of the loquat to be connected by refractory mud, preheating and heating the loquat head to be connected and the scattered steel wires, pouring white alloy into the heated loquat head to be connected and the scattered steel wires, introducing argon into a steel gas pipe to cool and solidify the poured white alloy, and welding and fixing the tail end of the steel wire rope and the loquat head to be connected. According to the application, impurities and bad parts in the old loquat heads are removed to obtain the to-be-connected loquat heads with higher quality, the tail ends of the steel wire ropes are split into scattered steel wires, the tail parts of the to-be-connected loquat heads are sealed by refractory clay, and the steel gas pipes are transversely inserted, so that after white alloy is poured and heated, the welding fixation between the tail ends of the steel wire ropes and the to-be-connected loquat heads is realized in a cooling solidification mode, and the welding reliability and stability are ensured.

Description

Welding method for steel wire rope and loquat head

Technical Field

The application relates to the field of welding of steel wire ropes, in particular to a method for welding a steel wire rope and a loquat head.

Background

The loquat head is an important tool for hoisting, no matter the article is hoisted or the crane equipment is, the loquat head can not be separated from the crane, such as a crane of a ship, a crane of the ship, and the like, and damaged steel wires connected with the loquat head need to be frequently replaced in the repairing process of the ship, wherein the fixing mode of the loquat head and the steel wire rope is particularly important.

The existing steel wire ropes are mainly fixed by adopting a braiding method, a rope clip fixing method, a pressing sleeve method, an inclined wedge fixing method, a pressing plate consolidation method, a lead filling method and the like, however, the methods are all methods used by manufacturers when producing new steel wire ropes, but in the repairing process of ships, the new steel wire ropes in loquat heads cannot be replaced, such as the connection of steel wires of the clinkers and lifting hooks (single-strand steel wire connection), because the lifting equipment of the ships is single-strand steel wires, the main reasons are that double-strand steel wires are used, the space of a crane tower machine room and equipment is larger than that of the single-strand steel wires, the cost is also large, and for a plurality of clinkers of a cargo ship, the factors influence the layout of the whole ship equipment, so that the replacement of the steel wires after a period of time of steel wire use is concerned about the connection of the steel wires and the lifting hooks.

Disclosure of Invention

In view of the above, the application provides a welding method of a steel wire rope and a loquat head, which is used for realizing the welding of the steel wire rope and the loquat head of a lifting hook.

In order to achieve the above object, the following solutions have been proposed:

a welding method of a steel wire rope and a loquat head comprises the following steps:

removing impurities from the old loquat heads to obtain loquat heads to be connected;

penetrating the tail end of the steel wire rope from the head and tail parts of the loquat to be spliced, and splitting the tail end of the steel wire rope into scattered steel wires;

sealing the head and tail parts of the loquat to be connected by using refractory clay;

transversely inserting a steel gas pipe into the refractory clay at the head and tail parts of the to-be-connected loquat;

preheating and heating the loquat head to be connected and the scattered steel wires;

pouring white alloy into the heated loquat heads to be connected and the scattered steel wires;

and (3) introducing argon into the steel gas pipe to cool and solidify the poured white alloy, and welding and fixing the tail end of the steel wire rope and the loquat head to be connected.

Optionally, the white alloy is a tin-based alloy with a brand of ZSNSb11Cu 6.

Optionally, the removing impurities from the old loquat head to obtain a to-be-connected loquat head includes:

heating the old loquat heads by using a lantern;

cleaning the heated old loquat heads;

and (5) wrapping the cleaned old loquat heads by using heat preservation cloth to cool the cleaned old loquat heads, so as to obtain the loquat heads to be connected.

Optionally, splitting the wire rope end into loose wire, including:

carrying out unit stranding on the tail end of the steel wire rope to obtain a plurality of strand-separated steel wires;

and splitting the multi-strand split steel wire to obtain a scattered steel wire.

Optionally, before sealing the end-to-end portion of the loquat to be connected with the refractory mortar, the method further comprises:

wrapping the head and tail parts of the loquat to be connected by using a boiler smoke door belt for one circle;

and after wrapping, sealing the ends of the loquat to be connected by using the refractory mortar.

Optionally, before the argon is introduced into the steel gas pipe to cool and fix the poured white alloy, the method further comprises:

connecting a section of steel pipe by using a rubber pipe, and inserting the steel pipe into the steel pipe from the head and tail parts of the loquat to be connected;

and introducing argon into the rubber tube, the steel tube and the steel gas tube in sequence to cool and fix the poured white alloy.

Optionally, before the to-be-connected loquat head and the bulk steel wires after the white alloy is poured and heated, a pretreatment process for the white alloy is further included, and the process includes:

melting the white alloy into a liquid white alloy;

stirring and impurity removing operation is carried out on the liquid white alloy by utilizing a preheated metal ladle, so that the liquid white alloy after impurity removal is obtained;

pouring the liquid white alloy after impurity removal into the to-be-connected loquat head and the scattered steel wires after heating.

Optionally, the metal spoon is formed by pressing a steel plate with the thickness not smaller than 5 mm.

According to the technical scheme, impurities and bad parts in the old loquat heads can be removed through impurity removal treatment, the to-be-connected loquat heads with higher quality are obtained, the tail parts of the to-be-connected loquat heads are divided into scattered steel wires through the tail ends of the steel wire ropes, and the tail parts of the to-be-connected loquat heads are sealed by using refractory mortar and transversely inserted into steel gas pipes, so that after white alloy is poured and heated, the welding and fixing between the tail ends of the steel wire ropes and the to-be-connected loquat heads can be realized through a cooling and solidifying mode, and the welding reliability and stability are ensured. By preheating the loquat head to be connected and the scattered steel wires, the flow speed and the solidification time of the white alloy pouring can be accelerated, so that the time of the whole processing process is shortened, and the production efficiency is improved. The loquat head to be connected and the scattered steel wires are welded by pouring the white alloy, so that more uniform and firm welding can be realized, and the quality and reliability of the whole product are improved.

Drawings

FIG. 1 is a flow chart of a welding method of a steel wire rope and a loquat head, which is provided by an embodiment of the application;

fig. 2 is a flowchart of loquat head impurity removal according to an embodiment of the present application;

FIG. 3 is a flowchart of a white alloy pretreatment according to an embodiment of the present application;

fig. 4 is a schematic diagram of a welding structure of a steel wire rope and a loquat head according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Fig. 1 is a diagram of a welding method for a steel wire rope and a loquat head, which can include the following steps:

and S100, performing impurity removal treatment on the old loquat heads to obtain the loquat heads to be connected.

Specifically, the old loquat head is often provided with broken steel wires, jelly added by manufacturers, rust and other impurities, and the old loquat head needs to be subjected to impurity removal treatment to obtain the loquat head to be connected.

And S110, penetrating the tail end of the steel wire rope from the head and the tail of the loquat to be connected, and splitting the tail end of the steel wire rope into scattered steel wires.

Specifically, the tail end of the steel wire rope can be penetrated from the head and the tail of the loquat to be connected, the tail end of the steel wire rope is split into scattered steel wires, and the scattered steel wires are favorable for adhesion and are used for storing the subsequent welding material white alloy.

And step S120, sealing the head and tail parts of the loquat to be connected by using refractory mud.

Specifically, the refractory clay can be in a mud shape diluted by water and used for preventing too much molten tin from flowing out of the head and the tail of the loquat in the process of pouring white alloy, and the head and the tail of the loquat to be connected can be sealed by the refractory clay.

And step 130, transversely inserting a steel gas pipe into the refractory clay at the head and tail parts of the to-be-connected loquat.

Specifically, transversely insert the steel trachea and can avoid to be blocked by molten tin gas outlet, in order to be convenient for cool off, can be in waiting to connect the refractory clay of loquat head afterbody, transversely insert the steel trachea.

And step 140, preheating and heating the loquat head to be connected and the scattered steel wires.

Specifically, in order to avoid the safety accident that molten tin suddenly encounters cold to generate splash, the loquat head to be connected and the scattered steel wires can be preheated to be heated, for example, to be 60-80 ℃.

And step S150, pouring white alloy into the heated loquat heads to be connected and the scattered steel wires.

Specifically, the white alloy can be poured into the heated loquat head to be connected and the scattered steel wires, and the loquat head to be connected and the scattered steel wires can be welded through the white alloy.

And step 160, cooling and solidifying the poured white alloy by utilizing the argon gas introduced into the steel gas pipe, and welding and fixing the tail end of the steel wire rope and the loquat head to be connected.

Specifically, the white alloy can be cooled by utilizing argon, the poured white alloy is cooled and solidified by utilizing the argon gas introduced into the steel gas pipe, and the tail end of the steel wire rope is welded and fixed with the loquat head to be connected.

According to the embodiment, impurities and bad parts in the old loquat heads can be removed, the to-be-connected loquat heads with higher quality can be obtained, the tail ends of the steel wire ropes are split into scattered steel wires, the tail parts of the to-be-connected loquat heads are sealed by refractory clay, the steel gas pipes are transversely inserted into the steel gas pipes, after white alloy is poured and heated, the fixed welding between the tail ends of the steel wire ropes and the to-be-connected loquat heads can be realized through a cooling solidification mode, and therefore the reliability and the stability of welding are guaranteed.

In some embodiments of the present application, the following description will describe the process of removing impurities from old loquat heads to obtain to-be-connected loquat heads in step S100, and as shown in fig. 2, the process may include the following steps:

and step S101, heating the old loquat heads by using a lantern.

Specifically, the old loquat heads are heated by the lantern, sundries in the old loquat heads, such as jelly, can be softened, and the next operation is facilitated.

Step S102, cleaning the heated old loquat heads.

Specifically, the cleaning mode is that for example, the old loquat head is turned upside down, and the old loquat head is further burned by flame of a lantern, so that the jelly in the loquat head falls off, and then the loquat head can be cleaned on the loquat head surface by means of a hairbrush rag and the like.

And step S103, wrapping the cleaned old loquat heads by using heat preservation cloth, and cooling to obtain the loquat heads to be connected.

Specifically, the loquat head can not be rapidly cooled by water so as not to influence the brittleness of the loquat head material and reduce the service performance, and the cleaned old loquat head is required to be cooled by wrapping with heat preservation cloth, so that the loquat head to be connected is obtained.

In some embodiments of the present application, a process of pouring white alloy into the heated loquat head and the loose wire in step S150 is described below, and the process may include:

and step S151, carrying out unit stranding on the tail end of the steel wire rope to obtain a plurality of strand-separated steel wires.

Specifically, the steel wire rope can be formed by weaving a plurality of strands of steel wires, and the tail end of the steel wire rope can be subjected to unit stranding to obtain a plurality of strands of stranding steel wires.

And step S152, splitting the multi-strand split steel wire to obtain a scattered steel wire.

Specifically, each strand of steel wire can be woven by a plurality of steel wires with minimum units, and the strand of steel wire can be further split to obtain scattered steel wires.

In some embodiments of the present application, before sealing the end of the loquat to be joined with refractory mortar in step S120, the present application may further include the steps of:

and S170, wrapping the head and the tail of the loquat to be connected by using a boiler smoke door belt for one circle.

Specifically, the boiler smoke gate belt has the characteristics of high temperature resistance and air leakage prevention, and the boiler smoke gate belt can be wrapped at the head and tail parts of the loquat to be connected for a circle.

And step S180, sealing the head and tail parts of the loquat to be connected by using the refractory mortar after wrapping.

Specifically, after being wrapped by the boiler smoke door belt, the head and tail parts of the loquat to be connected can be sealed by the fire clay again, and double sealing is implemented.

Further, in some embodiments of the present application, before the step S160 of cooling and solidifying the poured white alloy by using the argon gas to flow in the steel gas pipe, the present application may further include the following steps:

and step S190, connecting a section of steel pipe by using a rubber pipe, and inserting the steel pipe into the steel pipe from the head and tail parts of the loquat to be connected.

Specifically, the other end of rubber tube can be connected with the argon gas bottle, in order to make things convenient for the argon gas in the argon gas bottle to carry and prevent high temperature melting rubber tube, the one end of rubber tube can connect one section steel pipe to insert the steel pipe from waiting to connect loquat head and tail portion into the steel trachea.

And step 200, introducing argon into the rubber tube, the steel tube and the steel air tube in sequence to cool and fix the poured white alloy.

Specifically, because rubber tube, steel pipe and steel trachea connect gradually, can follow rubber tube, steel pipe and steel trachea in proper order and let in, cool off the white alloy after pouring, the white alloy has played fixed effect after the cooling.

In some embodiments of the application, the application may also include a pretreatment process for white alloys, as shown in fig. 3, which may include the steps of:

step S210, melting the white alloy into a liquid white alloy.

Specifically, the raw material of the white alloy can be solid, the white alloy can be melted by using a stove or a lantern as a heat source, the white alloy is melted into liquid white alloy, and a steel plate with the thickness of 6mm can be pressed into a pot head to dissolve the white alloy.

And S220, stirring and impurity removing operation is carried out on the liquid white alloy by utilizing a preheated metal ladle, so that the liquid white alloy after impurity removal is obtained.

Specifically, debris can appear in the white alloy in the melting process, can utilize the golden hand spoon to stir the edulcoration to liquid white alloy, in order to prevent that the metallic spoon from appearing the condition of condensation in contact with liquid white alloy, can preheat the metallic spoon, can utilize the metallic spoon that preheats to stir the edulcoration operation to liquid white alloy, obtain the liquid white alloy after the edulcoration.

And step S230, pouring the liquid white alloy after impurity removal into the to-be-spliced loquat head and the scattered steel wires after heating.

Specifically, after the liquid white alloy is subjected to impurity removal, the liquid white alloy is uniformly poured so that the liquid white alloy is fully contacted with the loquat heads and the bulk steel wires, the liquid white alloy is prevented from being condensed, and the liquid white alloy after the impurity removal can be poured and heated to be connected with the loquat heads and the bulk steel wires.

Further, the metal ladle in the above embodiment may be pressed from a steel plate having a thickness of not less than 5mm, for example, a steel plate of 5mm or 6 mm. The white alloy can be tin-based alloy with the brand of ZSNSb11Cu6, and is a low-melting-point bearing alloy with hard particle phases distributed on a soft substrate. There are three series of tin base, lead base and cadmium base. The tin-based Babbitt alloy comprises (by mass) antimony 3-15%, copper 2-6%, cadmium <1%, and tin in balance. Tin-based and lead-based bearing alloys with antifriction properties are named by the American Barbit application, and are white, also known as white alloys, and black gold, and tin-based Barbit and lead-based Barbit with antifriction properties are the only materials suitable for rotation relative to low-hardness shafts, and have better adaptability and indentation compared with other bearing materials, and are widely used in large marine diesel engines, turbines, alternators, other mining machinery, large rotating machinery and the like.

The following describes an application scenario of the scheme of the present application:

firstly, the tail end of the old steel wire rope is dissolved by using oxygen and coal gas through a lantern, then the steel wire hidden in the loquat head is melted at high temperature, and the flame is aimed at the steel wire, usually, a manufacturer can add some glue, the phenomenon of burning can be generated in the melting process, the best falling method is to invert the loquat head after burning for a period of time, and then the flame is from the tail end of the loquat head (namely the entering direction of the steel wire and the small end of the loquat head), so that the complete loquat head shell is obtained.

The impurities such as the gumming slag and rust in the loquat head pit are cleaned, a lantern can be used for heating and melting, particularly, the gumming slurry pouring material is baked by fire to be the best cleaning method, after the old pouring material is confirmed to be clean, the heat-insulating cloth is wrapped and slowly cooled, and the loquat head can not be rapidly cooled by water, so that the brittleness of the loquat head material is not influenced, and the service performance is reduced.

The novel steel wire is disassembled, the novel steel wire is cut out according to the length of the use, after the steel wire penetrates into the loquat head, the unit split steel wires of the whole steel wire are disassembled and separated at the tail end of the steel wire to become a plurality of strands of small-size steel wires, the steel wire disassembly and separation size is based on the length of the wrapping part of the loquat head (the length is about 140mm generally), then the plurality of strands of split steel wires are completely disassembled into each steel wire, that is, the more dispersed and better is achieved, the adhesion and the adhesion of the follow-up welding materials and white alloy are facilitated, as shown in fig. 4, fig. 4 provides a schematic diagram of the welding structure of the steel wire rope and the loquat head, and the steel wire comprises the steel wire rope, the fire clay, the ventilation pipe (steel pipe), the disassembled steel wire and the loquat head.

After the steps are finished, the whole set of steel wire connected loquat heads is fixed by hanging the steel wire connected loquat heads by using a tool, an operation platform with the height of 80mm is made by using angle steel, a section of steel pipe is used in the middle, the diameter of the steel pipe is selected according to the size of the loquat heads, then a boiler smoke door belt is used for wrapping a week, and then the boiler fire clay is used.

A section of 4mm steel pipe is connected to the tail end (namely a small end penetrating through a steel wire) of the loquat head by using a rubber pipe with the length of 6mm, a gap between steel wire splitting is utilized, a method of filling argon is used for carrying out rapid solidification and protection of tin water at the tail end, the flow rate of the tin water leaking out of the gap of the steel wire is reduced, and the control of the gas flow rate is regulated by using a pressure reducing valve, and specifically comprises the following steps: and a steel gas pipe is transversely inserted in the middle of the mud (the gas outlet can be prevented from being blocked by molten tin) and is subjected to a ventilation test before alloy pouring, so that whether gas is emitted from the loquat head or not is checked, if the gas is blocked by the fire clay, the steel wire is inserted into a ventilation pipe, and after the gas source is confirmed to be emitted from the steel wire at the tail end of the loquat head, the operation of the next procedure is performed.

A stove is made by using coke as fuel, an air pipe is buried in the stove for promoting the coke burning, if no open place condition exists, a lantern can be used for replacing the coke for heating, a thick-wall steel plate with the diameter of 6mm is pressed into a pan head for smelting white alloy, in addition, a steel plate with the diameter of 5mm and the diameter of 150mm is pressed into a spoon for scooping white alloy solution, the spoon is put into the coke for heating every time the white alloy solution is scooped, otherwise, the white alloy liquid can be splashed out, the safety problem of operators is endangered, and particularly the protection of eyes is achieved.

After the objects are ready, firewood is used for penetrating fire and then coke is put into the objects, blowing is not needed in the initial stage of burning, the size of a fire source is regulated by ventilation after the coke is completely ignited, and normally, blowing is needed in the process of melting white alloy, and blowing is closed after massive white alloy becomes liquid. If heating is performed by using a hurdle instead of coke, the operation of heating the coke can be ignored for a lot of convenience.

After a solid block of white alloy is put into a pot head to dissolve out liquid, a spoon is put into a fire source to heat, then the white alloy liquid is stirred by the spoon, the purpose is to separate impurities of the white alloy, a layer of powdery impurities float on the surface of the liquid after each stirring, then the impurities are scooped out, and the impurities are scooped out repeatedly to enable the white alloy liquid to be purer.

In the melting process, the amount of white alloy liquid required for casting is calculated, the phenomenon that insufficient liquid is needed for welding in the casting process is avoided, if the situation happens, the casting is failed, and the casting is restarted from the beginning, so that the factors such as loss, impurities, burning loss and the like are fully considered in the melting process, and as many solid white alloy blocks as possible are put into the melting process, and even if redundant solution exists, the solid white alloy blocks can be reused next time. After the solution is ready, the weld is prepared by a soak method (i.e., keeping the liquid from solidifying).

After the steps are finished, starting to weld the white alloy by using tin-based alloy with the brand name ZSNSb11Cu6 as a pouring material, firstly heating the loquat head to 60-80 ℃, then baking the steel wires which are disassembled in the loquat head by weak flame (which cannot open oxygen) at a long distance, then pouring the white alloy solution into the loquat head by using a pressed spoon, flowing the solution into gaps at each position through the disassembled steel wires, and finishing welding after the white alloy solution is fully filled and cooled.

The innovation points of the method are as follows: (1) Breaking through the traditional connecting method of the lock catch and the traditional process of inserting and winding the cross wires. (2) Compared with the traditional one, the anti-loosening and anti-loosening device is firmer, can not loosen and fall off, has higher tensile strength and ensures the safety coefficient. (3) For large-scale hoisting, the method for welding the steel wire and the loquat head together in a solution mode meets the requirement of stability. (4) The method of argon filling is used for carrying out rapid solidification and protection of tin water at the tail end, so that the flow rate of the tin water leaking out of a gap of a steel wire is reduced, and (5) the boiler refractory clay is used for diluting the refractory clay with water and stirring the refractory clay into mud to seal the loquat heads, so that an effective welding, filling and sealing effect is achieved.

The steel wire rope is applied to welding connection of a clinkering crane and a large lifting steel wire, tin-base alloy is poured to weld the clinkering crane and the large lifting steel wire, meanwhile, a method of argon blowing is adopted to quickly solidify and protect the tail end tin water, and a method of reducing the flow of the tin water leaking from a gap of the steel wire is adopted to meet the requirement of ship steel wire welding on lifting equipment.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and each embodiment may be combined with each other, and the same similar parts may be referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The welding method of the steel wire rope and the loquat head is characterized by comprising the following steps of:

removing impurities from the old loquat heads to obtain loquat heads to be connected;

penetrating the tail end of the steel wire rope from the head and tail parts of the loquat to be spliced, and splitting the tail end of the steel wire rope into scattered steel wires;

sealing the head and tail parts of the loquat to be connected by using refractory clay;

transversely inserting a steel gas pipe into the refractory clay at the head and tail parts of the to-be-connected loquat;

preheating and heating the loquat head to be connected and the scattered steel wires;

pouring white alloy into the heated loquat heads to be connected and the scattered steel wires;

and (3) introducing argon into the steel gas pipe to cool and solidify the poured white alloy, and welding and fixing the tail end of the steel wire rope and the loquat head to be connected.

2. The method of claim 1, wherein the white alloy is a tin-based alloy with the designation ZSnSb11Cu 6.

3. The method of claim 1, wherein the removing impurities from the old loquat heads to obtain the to-be-connected loquat heads comprises:

heating the old loquat heads by using a lantern;

cleaning the heated old loquat heads;

and (5) wrapping the cleaned old loquat heads by using heat preservation cloth to cool the cleaned old loquat heads, so as to obtain the loquat heads to be connected.

4. The method of claim 1, wherein splitting the wire rope end into loose wire comprises:

carrying out unit stranding on the tail end of the steel wire rope to obtain a plurality of strand-separated steel wires;

and splitting the multi-strand split steel wire to obtain a scattered steel wire.

5. The method of claim 1, further comprising, prior to sealing the ends of the loquats with the refractory mortar:

wrapping the head and tail parts of the loquat to be connected by using a boiler smoke door belt for one circle;

and after wrapping, sealing the ends of the loquat to be connected by using the refractory mortar.

6. The method of claim 1, further comprising, prior to cooling the poured white alloy with argon gas from the steel gas pipe:

connecting a section of steel pipe by using a rubber pipe, and inserting the steel pipe into the steel pipe from the head and tail parts of the loquat to be connected;

and introducing argon into the rubber tube, the steel tube and the steel gas tube in sequence to cool and fix the poured white alloy.

7. The method of claim 1, further comprising a pretreatment process for the white alloy prior to pouring the warmed-up loquat head and the loose wire, the process comprising:

melting the white alloy into a liquid white alloy;

stirring and impurity removing operation is carried out on the liquid white alloy by utilizing a preheated metal ladle, so that the liquid white alloy after impurity removal is obtained;

pouring the liquid white alloy after impurity removal into the to-be-connected loquat head and the scattered steel wires after heating.

8. The method of claim 7, wherein the metal scoop is pressed from a steel plate having a thickness of not less than 5 mm.