High-performance anti-pulling spring steel wire

Abstract

The utility model discloses a high-performance anti-pulling spring steel wire, which relates to the technical field of spring steel wires and comprises an inner core, a bonding layer is arranged on the outer ring of the inner core, an outer sheath is arranged on the outer ring of the bonding layer, and the inner core comprises a first steel wire, a second steel wire, a third steel wire and a fourth steel wire. According to the utility model, through the arrangement of the inner core, the outer sheath and the bonding layer and the arrangement of the spring steel inner core, it is ensured that a subsequently prepared spring has high fatigue limit, yield strength and tensile strength, so that it is ensured that the manufactured spring does not break or lose elasticity in the working process; through the arrangement of the stainless steel outer sheath, it is guaranteed that the surface of the spring manufactured subsequently has excellent corrosion resistance, and the phenomenon that the spring manufactured through the stainless steel outer sheath is corroded in the working process is reduced; the prepared spring can have high fatigue limit, yield strength and tensile strength and excellent corrosion resistance at the same time, and has high performance and corrosion resistance.

Description

Technical Field

[0001] This utility model relates to the field of spring steel wire technology, specifically a high-performance tensile-resistant spring steel wire. Background Technology

[0002] Spring steel wire is the main raw material for making springs, also known as spring blank. Spring steel wire is heated to increase its plasticity, and then wound into a spiral spring using winding equipment. After heat treatment, grinding, and spraying, the spring is completed. The performance of the spring directly depends on the performance of the spring steel wire. For example, stainless steel spring steel wire has good corrosion resistance but poor elasticity. Therefore, springs made from stainless steel spring steel wire have good corrosion resistance but poor elasticity. On the other hand, spring steel wire has good elasticity but poor corrosion resistance. Therefore, springs made from spring steel wire have good elasticity but poor corrosion resistance.

[0003] Application No. 202322479130.5 discloses a fatigue-resistant oil-quenched and tempered spring steel wire, comprising a wire body and an open groove. The open groove is formed in the middle of the inner cavity of the wire body surface. Supporting pads are fixedly connected to the top and bottom of both sides of the open groove inner cavity. A connecting pipe passes through the middle of the surface of the supporting pads. This utility model relates to the field of spring steel wire technology. This fatigue-resistant oil-quenched and tempered spring steel wire allows for internal ventilation during bending, preventing excessive surface temperature even under repeated bending. This effectively reduces the overall temperature during operation, preventing metal fatigue and protecting the metal properties of the spring steel wire, significantly extending its service life. Furthermore, it effectively reduces accumulated heat, preventing excessive temperature from affecting the connection structure.

[0004] This technical solution achieves the functions of corrosion resistance and heat insulation of springs through various resins, putties and coatings. However, spring steel wire is not a spring, but a blank of spring. It needs to be heated and plasticized and undergo two heat treatments to be made into steel wire. As a result, most of the functional layers such as the coating and resin layer on its surface are easily burned off and fall off, thus losing their function, or affecting the winding plasticity and heat treatment of spring steel wire. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a high-performance tensile-resistant spring steel wire to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-performance tensile spring steel wire, comprising an inner core, an adhesive layer disposed on the outer ring of the inner core, and an outer sheath disposed on the outer ring of the adhesive layer, the inner core comprising a first steel wire, a second steel wire, a third steel wire and a fourth steel wire.

[0007] By adopting the above technical solution, the spring steel inner core ensures that the subsequently manufactured spring has high fatigue limit, yield strength, and tensile strength, ensuring that the manufactured spring will not break or lose elasticity during operation. The stainless steel outer sheath ensures that the surface of the subsequently manufactured spring has excellent corrosion resistance, reducing the occurrence of corrosion during operation. Since metal powder is used as a bonding layer, the inner core and outer sheath are fixed together by heating and melting, thus forming a whole. Unlike surface plating, the stainless steel outer sheath is not easy to fall off or burn during the heating and heat treatment of the subsequent spring manufacturing process. It can be heated and plastically wound into a spring along with the spring steel inner core and undergo two subsequent heat treatments.

[0008] Furthermore, the first, second, third, and fourth steel wires are all made of spring steel.

[0009] By adopting the above technical solution, the spring steel inner core ensures that the subsequently manufactured springs have high fatigue limit, yield strength and tensile strength, so as to ensure that the springs will not break or lose elasticity during operation.

[0010] Furthermore, the first, second, third, and fourth steel wires are all spiral-shaped.

[0011] By adopting the above technical solution, workers use a stranding device to twist the first, second, third, and fourth steel wires together to form the core of a four-stranded wire.

[0012] Furthermore, the first, second, third, and fourth steel wires are intertwined.

[0013] By adopting the above technical solution, workers heat the core, add borax, and roll forge it to form a near-circular cross-section, which facilitates the formation of grooves for subsequent bonding.

[0014] Furthermore, the inner core is provided with grooves around its perimeter, and the grooves are spiral-shaped.

[0015] By adopting the above technical solution, the metal powder melts to form an adhesive layer, thereby bonding the inner core and the outer sheath together. At the same time, the grooves around the inner core can increase the bonding area and make the structure more secure.

[0016] Furthermore, the outer sheath is made of 316 stainless steel.

[0017] By adopting the above technical solution, the stainless steel outer sheath ensures that the surface of the subsequently manufactured spring has excellent corrosion resistance, reducing the occurrence of corrosion during the operation of the manufactured spring.

[0018] Furthermore, the outer sheath is fixedly connected to the inner core through an adhesive layer.

[0019] By adopting the above technical solution, workers melt metal powder through heated rolling to form an adhesive layer, thereby bonding the inner core and the outer sheath together.

[0020] Furthermore, the adhesive layer has a circular outer surface and a spiral hole inside.

[0021] By adopting the above technical solution, stainless steel metal powder or spring steel metal powder is filled into the gap between the inner core and the outer sheath. Workers can make the metal powder better fill the gap between the inner core and the outer sheath by tapping and vibrating. Then, workers melt the metal powder by heating and rolling to form an adhesive layer, thereby bonding the inner core and the outer sheath together.

[0022] Furthermore, the adhesive layer is made of 316 stainless steel powder or spring steel powder.

[0023] By adopting the above technical solutions, the adhesive layer is made of 316 stainless steel metal powder, which can better bond with the outer sheath, and the adhesive layer is made of spring steel metal powder, which can better bond with the inner core.

[0024] In summary, the present invention has the following main advantages:

[0025] This invention utilizes an inner core, an outer sheath, and an adhesive layer. The spring steel inner core ensures the resulting spring possesses high fatigue limit, yield strength, and tensile strength, preventing breakage or loss of elasticity during operation. The stainless steel outer sheath provides excellent corrosion resistance, reducing the likelihood of corrosion during use. Using metal powder as the adhesive layer, the inner core and outer sheath are fixed together through heating and melting, forming a unified structure. Unlike surface plating, the stainless steel outer sheath is less prone to detachment or burn-out during subsequent heating and heat treatment. It can be heated and plastically wound along with the spring steel inner core for both heat treatments, and there is no risk of surface layer peeling affecting corrosion resistance during use. The resulting spring exhibits high fatigue limit, yield strength, tensile strength, and excellent corrosion resistance, demonstrating high performance and corrosion resistance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the inner core structure before forging of this utility model;

[0027] Figure 2This is a schematic diagram of the inner core structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the outer sheath structure of this utility model;

[0029] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the image.

[0030] In the diagram: 1. Inner core; 101. First steel wire; 102. Second steel wire; 103. Third steel wire; 104. Fourth steel wire; 2. Outer sheath; 3. Adhesive layer. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The embodiments of this utility model will be described below based on its overall structure.

[0033] Example 1:

[0034] A high-performance tensile spring steel wire, such as Figures 2-4 As shown, the spring steel inner core 1 has an outer layer 3 made of metal powder. The outer part of the inner core 1 is circular, and the inner part of the inner core 1 has a spiral hole. The outer ring of the inner core 1 is made of 316 stainless steel. The outer ring 2 is fixedly connected to the inner core 1 through the adhesive layer 3. The inner core 1 ensures that the springs produced have high fatigue limit, yield strength and tensile strength, so that the springs will not break or lose elasticity during operation. The stainless steel outer ring 2 ensures that the surface of the springs produced has excellent corrosion resistance, reducing the occurrence of corrosion during operation. Since the metal powder is used as the adhesive layer 3, the inner core 1 and the outer ring 2 are fixed together by heating and melting, thus forming a whole. Unlike surface coating, the stainless steel outer ring 2 is not easy to fall off or burn during the heating and heat treatment of the springs. It can be heated and plastically wound into springs along with the inner core 1 and subjected to two subsequent heat treatments.

[0035] See Figures 1-4In the above embodiment, the inner core 1 includes a first steel wire 101, a second steel wire 102, a third steel wire 103, and a fourth steel wire 104. All three wires are made of spring steel and are spirally shaped. They are intertwined, and the inner core 1 has spirally shaped grooves around its perimeter. Workers cut the spring steel wires into four equal lengths, the specific cutting length depending on the length of the spring to be manufactured, thus completing the processing of the first steel wire 101, the second steel wire 102, the third steel wire 103, and the fourth steel wire 104. The first steel wire 101, the second steel wire 102, the third steel wire 103, and the fourth steel wire 104 are wound together using a stranding device to form the inner core 1 of a four-stranded wire. Then, the workers heat the wire, add borax, and roll forge the inner core 1 to form a near-circular cross-section, at which point the inner core 1 has grooves around its perimeter. Next, the workers wrap a layer of stainless steel sheet around the surface of the inner core 1 to form an outer sheath 2, and fill the gap between the inner core 1 and the outer sheath 2 with stainless steel metal powder or spring steel metal powder. The workers can use tapping and vibration to make the metal powder better fill the gap between the inner core 1 and the outer sheath 2. Then, the workers heat and roll forge the metal powder to melt it to form an adhesive layer 3, thereby bonding the inner core 1 and the outer sheath 2 together. At the same time, the grooves around the inner core 1 increase the bonding area and make the structure more secure.

[0036] Example 2:

[0037] Based on the above embodiment one, the following settings are now adopted to improve the bonding effect.

[0038] See Figure 3 and Figure 4 In the above embodiments, the adhesive layer 3 is made of 316 stainless steel metal powder or spring steel metal powder. The adhesive layer 3 is made of 316 stainless steel metal powder, which can better bond with the outer sheath 2. The adhesive layer 3 is made of spring steel metal powder, which can better bond with the inner core 1.

[0039] The implementation principle of this utility model is as follows: First, the worker cuts the spring steel wire into four steel wires of the same length. The specific cutting length of the spring steel wire depends on the length of the spring to be manufactured later, thus completing the processing of the first steel wire 101, the second steel wire 102, the third steel wire 103, and the fourth steel wire 104; then, the worker uses a stranding device to wind the first steel wire 101, the second steel wire 102, the third steel wire 103, and the fourth steel wire 104 together to form the inner core 1 of the four-stranded wire, as shown below. Figure 1As shown in the image; subsequently, workers forged the inner core 1 into a near-circular cross-section by heating, adding borax, and rolling. At this point, grooves exist around the perimeter of the inner core 1, as shown in the image. Figure 2 As shown in the diagram; subsequently, workers wrap a layer of stainless steel sheet around the surface of the inner core 1 to form an outer sheath 2, and fill the gap between the inner core 1 and the outer sheath 2 with stainless steel metal powder or spring steel metal powder. Workers can use tapping and vibration to better fill the gap between the inner core 1 and the outer sheath 2 with metal powder. Then, workers melt the metal powder by heating and rolling to form an adhesive layer 3, thereby bonding the inner core 1 and the outer sheath 2 together. At the same time, the grooves around the inner core 1 can increase the bonding area and make the structure more secure. Figure 3 and Figure 4 As shown;

[0040] The spring steel inner core 1 ensures that the subsequently manufactured spring has high fatigue limit, yield strength, and tensile strength, ensuring that the spring will not break or lose elasticity during operation. The stainless steel outer sheath 2 ensures that the surface of the subsequently manufactured spring has excellent corrosion resistance, reducing the occurrence of corrosion during operation. Since metal powder is used as the bonding layer 3, the inner core 1 and the outer sheath 2 are fixed together by heating and melting, thus forming a whole. Unlike surface coating, the stainless steel outer sheath 2 is not easy to fall off or burn during the heating and heat treatment of the spring. It can be heated and plastically wound into a spring along with the spring steel inner core 1 and undergo two subsequent heat treatments. Moreover, the surface layer will not peel off during subsequent use, affecting the corrosion resistance.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high performance tensile resistant spring steel wire comprising an inner core (1), characterized in that: The inner core (1) is provided with a bonding layer (3) outside, and the bonding layer (3) is provided with an outer sheath (2) outside.

2. A high performance stretch-resistant spring wire according to claim 1, characterized in that: The first steel wire (101), the second steel wire (102), the third steel wire (103) and the fourth steel wire (104) are all made of spring steel material.

3. A high performance stretch-resistant spring wire according to claim 2, characterized in that: The first steel wire (101), the second steel wire (102), the third steel wire (103) and the fourth steel wire (104) are all in spiral shape.

4. A high performance stretch-resistant spring wire according to claim 3, characterized in that: The first steel wire (101), the second steel wire (102), the third steel wire (103) and the fourth steel wire (104) are all in spiral shape.

5. The high performance stretch-resistant spring wire of claim 1, wherein: The inner core (1) is provided with a bonding layer (3) outside, and the bonding layer (3) is provided with an outer sheath (2) outside.

6. The high performance stretch-resistant spring wire of claim 1, wherein: The outer sheath (2) is made of 316 stainless steel material.

7. A high performance stretch-resistant spring wire according to claim 6, characterized in that: The outer sheath (2) is fixedly connected with the inner core (1) through the bonding layer (3).

8. The high-performance stretch-resistant spring wire of claim 7, wherein: The bonding layer (3) is circular outside, and is provided with a spiral hole inside.

9. The high performance stretch-resistant spring wire of claim 8, wherein: The bonding layer (3) is made of 316 stainless steel metal powder or spring steel metal powder.

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