CN210420042U - Spring steel wire destressing annealing production system - Google Patents
Spring steel wire destressing annealing production system Download PDFInfo
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- CN210420042U CN210420042U CN201921265498.9U CN201921265498U CN210420042U CN 210420042 U CN210420042 U CN 210420042U CN 201921265498 U CN201921265498 U CN 201921265498U CN 210420042 U CN210420042 U CN 210420042U
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Abstract
The utility model belongs to the technical field of the spring steel wire is made, especially, relate to a spring steel wire destressing annealing production system. The utility model discloses, including the inside shell body that has annealing cavity, outer shells inner wall fixedly connected with one deck insulating layer, shell body one side is equipped with the furnace gate that can open or closed annealing cavity, is equipped with a plurality of heating resistor in the annealing cavity for the warm table of placing the spring steel wire is located under the heating resistor, and with shell body fixed connection, the fixed supporting mechanism that is provided with on the warm table, and the wire sleeve is located supporting mechanism. The utility model discloses be equipped with the supporting mechanism who lifts the spring steel wire on the warm table, reduced the area of contact of spring steel wire and warm table greatly, improved the homogeneity that spring steel wire annealing process is heated.
Description
Technical Field
The utility model belongs to the technical field of the spring steel wire is made, especially, relate to a spring steel wire destressing annealing production system.
Background
Annealing is a heat treatment process for metals, which refers to slowly heating the metal to a certain temperature, holding for a sufficient time, and then cooling at a suitable rate. The purpose is to reduce hardness and improve machinability; the residual stress is reduced, the size is stabilized, and the deformation and crack tendency is reduced; refining grains, adjusting the structure and eliminating the structure defects. Specifically, annealing is a heat treatment process for materials, including metallic materials and non-metallic materials. However, in the annealing process in the prior art, the contact area between the annealing device and the workpiece to be annealed is large, so that the heating is not uniform enough.
For example, the chinese utility model patent application discloses an annealing furnace [ application number: 200520132586.3], the utility model comprises a furnace shell, a furnace and a sealing door; the method is characterized in that: the sealing door is arranged on the side surface of the furnace pipe; the bottom of the furnace pipe is provided with a furnace pipe rolling piece, and the lower part of the furnace pipe is provided with a furnace pipe sliding piece matched with the furnace pipe rolling piece; a workpiece placing rack is further arranged in the furnace pipe, a workpiece placing rack rolling member is arranged at the bottom of the workpiece placing rack, and a workpiece placing rack built-in sliding member matched with the workpiece placing rack rolling member is further arranged in the furnace pipe; the outer part of the furnace pipe is also provided with a workpiece placing frame external sliding part which can be connected with the workpiece placing frame internal sliding part.
The utility model discloses a directly place the silicon steel sheet on the work piece rack in annealing process, it is great with the area of contact who treats between the annealing work piece to have foretell annealing device, leads to being heated not enough even problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a spring steel wire destressing annealing production system.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides a spring steel wire destressing annealing production system, has the shell body of annealing cavity including inside, shell body inner wall fixedly connected with one deck insulating layer, shell body one side is equipped with the furnace gate that can open or closed annealing cavity, be equipped with a plurality of heating resistor in the annealing cavity for place the warm table of spring steel wire be located under the heating resistor, and with shell body fixed connection, the fixed supporting mechanism that is provided with on the warm table, the steel wire sleeve is located supporting mechanism.
In foretell spring steel wire destressing annealing production system, supporting mechanism includes the support base that a plurality of set up along steel wire sleeve axial lead direction, support base and warm table fixed connection, the one end fixedly connected with that supports the base and keep away from the warm table is convex holding surface, the holding surface upper surface is laminated with steel wire sleeve surface mutually.
In the spring steel wire stress relief annealing production system, the radian of the supporting surface is matched with the radian of the steel wire sleeve.
In foretell spring steel wire destressing annealing production system, the holding surface includes the lower surface with support base fixed connection and the upper surface of laminating mutually with the steel wire sleeve, the upper surface still protrusion has the anti-skidding bump of a plurality of even arrangement.
In the above-mentioned spring steel wire destressing annealing production system, the anti-slip convex points are made of rubber materials.
In the spring steel wire stress relief annealing production system, at least three heating resistors are arranged, the axial lead of each heating resistor is parallel to each other, and the axial lead of each heating resistor extends along the length direction of the outer shell.
In the spring steel wire destressing annealing production system, a plurality of temperature sensing elements fixedly connected to the outer shell are further arranged in the annealing cavity, the temperature sensing elements are symmetrically arranged on the upper side and the lower side of the heating resistor, and the temperature sensing elements are electrically connected with a temperature display arranged on the outer side of the outer shell.
In the spring steel wire destressing annealing production system, the outer shell is also provided with a vacuumizing port and a nitrogen replacement port which penetrate through the outer shell and are communicated with the annealing cavity.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses be equipped with the supporting mechanism who lifts the spring steel wire on the warm table, reduced the area of contact of spring steel wire and warm table greatly, improved the homogeneity that spring steel wire annealing process is heated.
2. The utility model discloses be equipped with nitrogen gas replacement mouth, the whole technology of messenger goes on under the protection of nitrogen gas, prevents that the spring steel wire from by the oxidation.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the structure of the support surface;
in the figure: the device comprises an annealing cavity 1, an outer shell 2, a heat insulation layer 3, a furnace door 4, a heating resistor 5, a heating table 6, a supporting mechanism 7, a steel wire sleeve 8, a temperature sensing element 9, a vacuumizing port 10, a nitrogen replacement port 11, a supporting base 71, a supporting surface 72, a lower surface 73, an upper surface 74 and anti-skidding bumps 75.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
The embodiment provides a spring steel wire destressing annealing production system, as shown in fig. 1, shell body 2 that has annealing cavity 1 including inside, 2 inner wall fixedly connected with one deck insulating layers 3 of shell body, shell body 2 one side is equipped with the furnace gate 4 that can open or closed annealing cavity 1, be equipped with a plurality of heating resistor 5 in the annealing cavity 1 for place spring steel wire's warm table 6 is located under heating resistor 5, and with shell body 2 fixed connection, fixed supporting mechanism 7 that is provided with on the warm table 6, steel wire sleeve 8 is located supporting mechanism 7.
The utility model discloses, during the use, arrange the spring steel wire in the steel wire sleeve 8 that is located supporting mechanism 7, close furnace gate 4, the circular telegram makes heating resistor 5 generate heat to promote the annealing cavity 1 internal temperature, realize the annealing to the spring steel wire, so the utility model discloses be equipped with the supporting mechanism 7 of lifting the spring steel wire on warm table 6, reduced the area of contact of spring steel wire and warm table 6 greatly, improved the homogeneity that spring steel wire annealing process was heated.
Preferably, at least three heating resistors 5 are arranged, the axial lead of each heating resistor 5 is parallel to each other, and the axial lead of each heating resistor 5 extends along the length direction of the outer shell 2, so that the heating uniformity can be further ensured.
As shown in fig. 2, the supporting mechanism 7 includes a plurality of supporting bases 71 arranged along the axial lead direction of the steel wire sleeve 8, the supporting bases 71 are fixedly connected with the heating table 6, one end of the supporting bases 71 far away from the heating table 6 is fixedly connected with a supporting surface 72 in the shape of a circular arc, the upper surface of the supporting surface 72 is attached to the outer surface of the steel wire sleeve 8, so that the steel wire sleeve 8 is only in contact with the supporting surface 72, the stability of the steel wire sleeve 8 in the annealing process is ensured, and meanwhile, the supporting mechanism has a smaller contact area compared with a mode of being placed on the heating table 6 and being in direct contact with the heating table 6.
Preferably, the curvature of the support surface 72 is adapted to the curvature of the wire sleeve 8, so as to enhance the stability of the placement of the wire sleeve 8.
As shown in fig. 3, the supporting surface 72 includes a lower surface 73 fixedly connected to the supporting base 71 and an upper surface 74 attached to the wire sleeve 8, and a plurality of anti-slip bumps 75 uniformly arranged are protruded from the upper surface 74, wherein the anti-slip bumps 75 are made of a rubber material, so that the friction between the wire sleeve 8 and the supporting surface 72 can be increased, and the wire sleeve 8 is prevented from rotating along the axial direction during the annealing process.
As shown in fig. 2, a plurality of temperature sensing elements 9 fixedly connected to the outer shell 2 are further disposed in the annealing cavity 1, the temperature sensing elements 9 are symmetrically disposed on the upper side and the lower side of the heating resistor 5, the accuracy of temperature measurement can be improved through multipoint measurement, the temperature sensing elements 9 are electrically connected to a temperature display (not shown) disposed on the outer side of the outer shell 2, the temperature sensing elements 9 can be commercially available temperature sensors and used for measuring the temperature in the annealing cavity 1, and the measured temperature data is displayed in a numerical manner through the temperature display disposed on the outer side of the outer shell 2, so that a user can control the temperature in the annealing cavity 1.
As shown in fig. 1, the outer shell 2 is further provided with a vacuum pumping port 10 and a nitrogen gas replacement port 11 which penetrate through the outer shell 2 and are communicated with the annealing cavity 1, so that the whole annealing process is carried out under the protection of nitrogen gas, and the spring steel wire is prevented from being oxidized.
Example 2
The present embodiment provides a spring steel wire stress relief annealing production method using the spring steel wire stress relief annealing production system provided in embodiment 1, and as shown in fig. 1 and fig. 2, the method includes the following steps:
the method comprises the following steps: placing the spring steel wire into the steel wire sleeve 8, placing the steel wire sleeve 8 on the supporting mechanism 7, at the moment, attaching the steel wire sleeve 8 to the supporting surface 72, and closing the furnace door 4;
step two: removing gas in the annealing cavity 1 by using the vacuumizing port 10, supplementing nitrogen to the annealing cavity 1 through the nitrogen replacing port 11, repeating the operation for a plurality of times, and closing the vacuumizing port 10 and the nitrogen replacing port 11;
step three: controlling the temperature in the annealing cavity 1 by using the heating resistor 5 to anneal the spring steel wire in the steel wire sleeve 8, and measuring the temperature in the annealing cavity 1 by using the temperature sensing element 9;
step four: and discharging to obtain the annealed destressing spring steel wire.
Wherein, the step three of controlling the temperature in the annealing cavity 1 by using the heating resistor 5 specifically comprises the following steps:
step A: heating to 600 ℃, preserving heat for 0.5h, and then heating to 900 ℃ at the heating rate of 300 ℃/h;
and B: cooling to 800 ℃ at a cooling rate of 15 ℃/h, and preserving heat for 2 h;
and C: cooling to 650 ℃ at the cooling rate of 15 ℃/h, and keeping the temperature for 1 h;
step D: heating to 730 ℃ at the heating rate of 50 ℃/h, and keeping the temperature for 1 h;
step E: cooling to below 500 ℃ at a cooling rate of 10 ℃/h.
The event the utility model discloses heat to a higher temperature at the initial stage, heat up to 900 in step A and give other heat 940 ℃, cooling process has a rewarming process in the cooling process, rewarming process in step D promptly to guarantee that the spring steel wire that makes has less internal stress, can be used to the less spring of coiling internal diameter.
Example 3
The present embodiment provides a spring steel wire stress relief annealing production method using the spring steel wire stress relief annealing production system provided in embodiment 1, and as shown in fig. 1 and fig. 2, the method includes the following steps:
the method comprises the following steps: placing the spring steel wire into the steel wire sleeve 8, placing the steel wire sleeve 8 on the supporting mechanism 7, at the moment, attaching the steel wire sleeve 8 to the supporting surface 72, and closing the furnace door 4;
step two: removing gas in the annealing cavity 1 by using the vacuumizing port 10, supplementing nitrogen to the annealing cavity 1 through the nitrogen replacing port 11, repeating the operation for a plurality of times, and closing the vacuumizing port 10 and the nitrogen replacing port 11;
step three: controlling the temperature in the annealing cavity 1 by using the heating resistor 5 to anneal the spring steel wire in the steel wire sleeve 8, and measuring the temperature in the annealing cavity 1 by using the temperature sensing element 9;
step four: and discharging to obtain the annealed destressing spring steel wire.
Wherein, the step three of controlling the temperature in the annealing cavity 1 by using the heating resistor 5 specifically comprises the following steps:
step A: heating to 650 ℃, preserving heat for 1.5h, and then heating to 940 ℃ at the heating rate of 600 ℃/h;
and B: cooling to 850 ℃ at the cooling rate of 25 ℃/h, and keeping the temperature for 4 h;
and C: cooling to 700 ℃ at the cooling rate of 25 ℃/h, and preserving heat for 2 h;
step D: heating to 770 ℃ at the heating rate of 100 ℃/h, and keeping the temperature for 2 h;
step E: cooling to below 500 ℃ at a cooling rate of 6 ℃/h.
Example 4
The present embodiment provides a spring steel wire stress relief annealing production method using the spring steel wire stress relief annealing production system provided in embodiment 1, and as shown in fig. 1 and fig. 2, the method includes the following steps:
the method comprises the following steps: placing the spring steel wire into the steel wire sleeve 8, placing the steel wire sleeve 8 on the supporting mechanism 7, at the moment, attaching the steel wire sleeve 8 to the supporting surface 72, and closing the furnace door 4;
step two: removing gas in the annealing cavity 1 by using the vacuumizing port 10, supplementing nitrogen to the annealing cavity 1 through the nitrogen replacing port 11, repeating the operation for a plurality of times, and closing the vacuumizing port 10 and the nitrogen replacing port 11;
step three: controlling the temperature in the annealing cavity 1 by using the heating resistor 5 to anneal the spring steel wire in the steel wire sleeve 8, and measuring the temperature in the annealing cavity 1 by using the temperature sensing element 9;
step four: and discharging to obtain the annealed destressing spring steel wire.
Wherein, the step three of controlling the temperature in the annealing cavity 1 by using the heating resistor 5 specifically comprises the following steps:
step A: heating to 620 ℃, preserving the heat for 1h, and then heating to 920 ℃ at the heating rate of 450 ℃/h;
and B: cooling to 820 ℃ at the cooling rate of 20 ℃/h, and preserving heat for 3 h;
and C: cooling to 680 ℃ at the cooling rate of 20 ℃/h, and preserving heat for 1.5 h;
step D: heating to 750 ℃ at the heating rate of 75 ℃/h, and keeping the temperature for 1.5 h;
step E: cooling to below 500 ℃ at a cooling rate of 8 ℃/h.
Application example 1
Taking 300 same spring steel wires, equally dividing the spring steel wires into three groups A, B and C, wherein each group is 100 spring steel wires, annealing the three groups A, B and C according to the methods recorded in the embodiments 2, 3 and 4 to obtain the spring steel wires 1, 2 and 3 respectively, detecting the tensile strength and Rockwell hardness of the spring steel wires 1, 2 and 3 respectively, and averaging the results, as shown in the following table:
and (4) analyzing results: can find out through above experimental data, the utility model discloses the spring steel wire that makes has higher rockwell hardness and tensile strength, suitable material as the preparation spring.
The detection data of tensile strength comes from a tensile testing machine produced by Jinxin testing machine manufacturing Limited of Jinan Chen, and the detection data of hardness comes from a metal hardness detector produced by Shijiazhuang Feitai detection instrument Limited of Shijiazhuang.
Comparative example 1
Taking the spring steel wire same as that in the application example 1, and carrying out annealing treatment through the following steps to obtain a spring steel wire 4:
step S1: heating to 620 ℃, and preserving heat for 1 h;
step S2: heating to 820 ℃, and preserving heat for 3 h;
step S3: cooling to 680 ℃ at the cooling rate of 20 ℃/h, and preserving heat for 1.5 h;
step S4: cooling to below 500 ℃ at a cooling rate of 8 ℃/h.
The spring steel wire 4 and the spring steel wire 3 prepared in application example 1 were taken and wound into springs with diameters of 10mm, 6mm, 3mm and 1mm, respectively, and after the winding was completed, the surface of the spring was observed, and the results are shown in the following table:
and (4) analyzing results: can find out through above experimental data, the utility model discloses the spring steel wire that makes has less internal stress, has reached the utility model discloses anticipated purpose.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms annealing cavity 1, outer casing 2, insulating layer 3, oven door 4, heating resistor 5, heating stage 6, support mechanism 7, wire sleeve 8, temperature sensing element 9, vacuum pumping port 10, nitrogen gas replacement port 11, support base 71, support surface 72, lower surface 73, upper surface 74, anti-slip bump 75, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (8)
1. The utility model provides a spring steel wire destressing annealing production system, has shell body (2) of annealing cavity (1) including inside, shell body (2) inner wall fixedly connected with one deck insulating layer (3), shell body (2) one side is equipped with furnace door (4) that can open or closed annealing cavity (1), its characterized in that: the annealing cavity (1) is internally provided with a plurality of heating resistors (5), a heating table (6) for placing spring steel wires is positioned under the heating resistors (5) and is fixedly connected with the outer shell (2), the heating table (6) is fixedly provided with a supporting mechanism (7), and a steel wire sleeve (8) is positioned on the supporting mechanism (7).
2. The spring wire stress relief annealing production system according to claim 1, wherein: supporting mechanism (7) include support base (71) that a plurality of set up along wire sleeve (8) axial lead direction, support base (71) and warm table (6) fixed connection, the one end fixedly connected with that the warm table (6) was kept away from in support base (71) is convex holding surface (72), holding surface (72) upper surface and wire sleeve (8) surface laminate mutually.
3. The spring wire stress relief annealing production system according to claim 2, wherein: the radian of the supporting surface (72) is matched with that of the steel wire sleeve (8).
4. The spring wire stress relief annealing production system according to claim 3, wherein: the supporting surface (72) comprises a lower surface (73) fixedly connected with the supporting base (71) and an upper surface (74) attached to the steel wire sleeve (8), and a plurality of anti-skidding convex points (75) which are uniformly distributed protrude from the upper surface (74).
5. The spring wire stress relief annealing production system according to claim 4, wherein: the anti-skid convex points (75) are made of rubber materials.
6. The spring wire stress relief annealing production system according to claim 1, wherein: the heating resistors (5) are at least three, the axial lead of each heating resistor (5) is parallel to each other, and the axial lead of each heating resistor (5) extends along the length direction of the outer shell (2).
7. The spring wire stress relief annealing production system according to claim 1, wherein: the annealing device is characterized in that a plurality of temperature sensing elements (9) fixedly connected to the outer shell (2) are further arranged in the annealing cavity (1), the temperature sensing elements (9) are symmetrically arranged on the upper side and the lower side of the heating resistor (5), and the temperature sensing elements (9) are electrically connected with a temperature display arranged on the outer side of the outer shell (2).
8. The spring wire stress relief annealing production system according to claim 1, wherein: the outer shell (2) is also provided with a vacuumizing port (10) and a nitrogen replacement port (11) which penetrate through the outer shell (2) and are communicated with the annealing cavity (1).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438304A (en) * | 2019-08-06 | 2019-11-12 | 诸暨市海纳特钢有限公司 | Spring steel wire stress relief annealing production system and method |
| CN110438304B (en) * | 2019-08-06 | 2024-04-12 | 诸暨市海纳特钢有限公司 | Spring steel wire stress relief annealing production system and method |
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2019
- 2019-08-06 CN CN201921265498.9U patent/CN210420042U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438304A (en) * | 2019-08-06 | 2019-11-12 | 诸暨市海纳特钢有限公司 | Spring steel wire stress relief annealing production system and method |
| CN110438304B (en) * | 2019-08-06 | 2024-04-12 | 诸暨市海纳特钢有限公司 | Spring steel wire stress relief annealing production system and method |
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