CN210261857U - Tool capable of realizing high-frequency induction local quenching uniformity of two-section type part - Google Patents
Tool capable of realizing high-frequency induction local quenching uniformity of two-section type part Download PDFInfo
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- CN210261857U CN210261857U CN201920464054.1U CN201920464054U CN210261857U CN 210261857 U CN210261857 U CN 210261857U CN 201920464054 U CN201920464054 U CN 201920464054U CN 210261857 U CN210261857 U CN 210261857U
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Abstract
The utility model relates to a can realize frock of two segmentation part high frequency induction local quenching homogeneity belongs to high frequency local quenching heat treatment technical field. The two-section part is made of stainless steel and comprises a small cylinder and a large cylinder, the small cylinder and the large cylinder are coaxial, the diameter of the small cylinder is smaller than that of the large cylinder, the connecting part of the small cylinder and the large cylinder is in smooth transition, and the connecting part of the small cylinder and the large cylinder is marked as a smooth transition section; the frock is the cylinder that has the hole, and the external diameter of the cylindrical external diameter that has the hole is the same with big cylinder, and the diameter ratio of the cylindrical hole that has the hole is big 0.1 ~ 0.15mm than little cylindrical external diameter. Through adopting the utility model discloses, the quenching position forms same whole with the frock, and the part heaies up and cools off with the frock is synchronous, and local quenching is even, unanimous.
Description
Technical Field
The utility model relates to a can realize frock of two segmentation part high frequency induction local quenching homogeneity belongs to high frequency local quenching heat treatment technical field.
Background
The high-frequency local quenching technology is used for meeting the requirement of high-hardness usability of a certain part of a stainless steel part, and heating is realized through three basic principles of electromagnetic induction, "skin effect" and heat conduction of a high-frequency induction heating coil. The high-frequency local quenching technology has the characteristics of quick heating, short working time, improvement of the fatigue strength of a workpiece, difficulty in oxidation and decarburization during instantaneous heating, small deformation and the like.
The traditional high-frequency local quenching technology is suitable for parts with single shapes, and parts with complex shapes such as two-section parts have inconsistent quenching effects in coils with the same diameter due to the proximity effect of induction heating, so that the quenching effect cannot be achieved or the hardness distribution is not uniform due to low local temperature. In recent years, a high-frequency induction coil bent into a part outline shape is adopted for local quenching treatment, is suitable for local quenching of parts with large size difference, and has the advantages of strong pertinence, poor universality, high coil winding difficulty and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the problem of poor local quenching uniformity of two-section parts is solved by breaking through the bottleneck of high-frequency local quenching of parts with single traditional structures. The utility model can improve the local heating uniformity of the two-segment type part, increase the effective length of local quenching, reduce the difficulty of production and processing, and meet the special use requirement of complex shape. The utility model discloses frock simple structure, the quality is lighter, and is with low costs, makes simply convenient to use. The method breaks through the existing technology of meeting the requirement of local quenching of two-section parts by changing the shape of a heating coil, and develops a tool matched with the parts on the premise of not changing the shape of the coil, so that the tool and the parts form the same whole, and the heating uniformity of the parts is ensured.
The utility model provides a technical scheme that its technical problem adopted is:
a can realize the frock of local quenching homogeneity of two segmentation part high frequency induction, the material of said two segmentation parts is stainless steel, two segmentation parts include small cylinder and big cylinder, small cylinder and big cylinder are coaxial, the diameter of the small cylinder is smaller than the diameter of the big cylinder, the diameter of the big cylinder is not smaller than the double of the diameter of the small cylinder, the small cylinder and big cylinder are an integrated into one piece structure, the joint part of the small cylinder and big cylinder is the smooth transition, mark the joint part of the small cylinder and big cylinder as the smooth transition section;
the material of frock be alloy tool steel, the frock is the cylinder that has the step hole, the cylindrical external diameter that has the step hole is the same with the external diameter of big cylinder, the part that the diameter of the cylindrical hole that has the step hole is big than the external diameter of smooth transition section big 0.1 ~ 0.15mm, the part that the diameter of the cylindrical hole that has the step hole is little than little cylindrical external diameter big 0.1 ~ 0.15 mm.
The diameter of the inner hole of the cylinder with the inner hole is 0.1-0.15 mm larger than the outer diameter of the small cylinder, and the meaning is as follows: the small cylinder can be sleeved into an inner hole of the cylinder with the inner hole; the inner hole of the cylinder with the inner hole is a blind hole;
the material of frock be alloy tool steel, the cylinder of frock for having the hole, the cylindrical external diameter that has the hole is the same with big cylinder's external diameter, the diameter ratio of the cylindrical hole that has the hole is little cylindrical external diameter and the external diameter of smooth transition section 0.1 ~ 0.15mm big meaning is: the small cylinder and the smooth transition section can be sleeved into an inner hole of the cylinder with the inner hole; the inner hole of the cylinder with the inner hole is a countersunk hole and is also a blind hole;
the tool is made of alloy tool steel, the tool is a cylinder with an inner hole, the outer diameter of the cylinder with the inner hole is 2-4 mm larger than that of the large cylinder, the tool is a cylinder with a stepped inner hole, the outer diameter of the cylinder with the inner hole is 2-4 mm larger than that of the large cylinder, the stepped inner hole comprises a part with a large diameter, a part with a large diameter and a part with a small diameter, the part with the large diameter of the cylinder with the stepped inner hole is 0.1-0.15 mm larger than that of the large cylinder, the part with the large diameter of the cylinder with the stepped inner hole is 0.1-0.15 mm larger than that of the smooth transition section, and the part with the small diameter of the cylinder with the stepped inner hole is 0.1-0.15 mm larger than that of the small cylinder; the larger of the larger diameter portions of the stepped bore means that the larger diameter portion is smaller in diameter than the larger diameter portion and larger in diameter than the smaller diameter portion;
the diameter of the inner hole of the cylinder with the inner hole is 0.1-0.15 mm larger than the outer diameter of the small cylinder, the outer diameter of the smooth transition section and the outer diameter of the large cylinder: the small cylinder, the smooth transition section and the large cylinder can be sleeved into inner holes of cylinders with inner holes with different diameters, and the inner holes are also blind holes.
Compared with the prior art, the utility model beneficial effect be:
(1) the utility model discloses can realize two segmentation part high frequency induction local quenching homogeneity.
(2) The utility model discloses break through present mode through changing heating coil shape and satisfy the local technique of quenching of two segmentation parts, under the unchangeable prerequisite of coil shape, the cooperation frock of development part is in order to guarantee part heating homogeneity.
(3) The utility model has simple structure, light weight, low cost and simple manufacture, and can be used for the heat treatment of parts with uneven local induction quenching.
(4) The tool material is an alloy tool steel with good heat transfer performance. The size of the tool is matched with that of the part, so that the quenching uniformity is ensured. The tool material is an alloy tool steel with low quenching temperature, high overburning temperature, good hardenability and good heat conduction performance.
(5) The utility model discloses well two segmentation parts heat in the induction coil of single shape, because diameter, length are different, and each position programming rate and cooling rate are different, and direct influence quenches the homogeneity, through adopting the utility model discloses, the quenching position forms same whole with the frock, and the part heaies up and cools off with the frock is synchronous, and local quenching is even, unanimous. The tool is made of a material with good heat conduction performance and low quenching temperature, and the tool is beneficial to quickly raising the temperature by transferring heat to the part in a heat conduction mode, so that the part quenching effect is achieved.
Drawings
Fig. 1a is a schematic structural view of a two-stage part and a tool in embodiment 1;
FIG. 1b is a schematic structural view of a two-stage part and a tool in example 1, which are nested together;
FIG. 1c is a schematic size diagram of the two-part component of embodiments 1, 2, and 3;
fig. 2a is a schematic structural view of a two-stage part and a tool in embodiment 2;
fig. 2b is a schematic structural view of a two-section part and a tool in embodiment 2 in a sleeved manner;
fig. 3a is a schematic structural view of a two-stage part and a tool in embodiment 3;
fig. 3b is a schematic structural view of a two-section part and a tool in embodiment 3 in a sleeved manner.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
As shown in fig. 1a, 1b and 1c, a tool capable of realizing high-frequency induction local quenching uniformity of a two-section part, wherein the two-section part 1 comprises a small cylinder and a large cylinder, the small cylinder and the large cylinder are coaxial, the outer diameter of the small cylinder is smaller than that of the large cylinder, the small cylinder and the large cylinder are in an integrated structure, the connecting part of the small cylinder and the large cylinder is in smooth transition, and the connecting part of the small cylinder and the large cylinder is marked as the smooth transition section;
the material of frock 2 be alloy tool steel, the frock is the cylinder that has the hole, the cylindrical external diameter that has the hole is the same with the external diameter of big cylinder, the diameter ratio of the cylindrical hole that has the hole is 0.1mm big than little cylindrical external diameter, the meaning that the diameter ratio of the cylindrical hole that has the hole is 0.1mm big than little cylindrical external diameter is: the small cylinder can be just sleeved into the inner hole of the cylinder with the inner hole; the inner hole of the cylinder with the inner hole is a blind hole;
when the heat treatment is carried out, the tool is sleeved on the part.
Example (c): a small cylinder and a large cylinder are coaxial, the outer diameter of the small cylinder is 1.2mm, the length of the small cylinder is 9mm, the outer diameter of the large cylinder is 2.5mm, the length of the large cylinder is 16mm, the small cylinder and the large cylinder are of an integrally formed structure, the connecting part of the small cylinder and the large cylinder is a two-section part in smooth transition, the small cylinder and the large cylinder are placed on a station of high-frequency local quenching equipment for heat treatment, and the parameters of the high-frequency local quenching equipment during the heat treatment are as follows: the grid current is 0.21A, the anode current is 0.2A, the anode voltage is 6.5kV, the heating time is 7.5s, and the cooling mode is water cooling;
after the heat treatment is finished, the hardness of each zone is detected by using a Rockwell hardness tester, and the result is recorded as shown in table 1, wherein the position of 0 in one zone in table 1 is the position of the end face of the small cylinder;
TABLE 1 hardness distribution of high frequency local quench before use of tooling
Another two-section part which is the same as the part is taken, the tool 2 is sleeved on the part and is placed on a station of the high-frequency local quenching equipment for heat treatment, and the parameters of the high-frequency local quenching equipment during the heat treatment are as follows: the grid current is 0.21A, the anode current is 0.2A, the anode voltage is 6.5kV, the heating time is 7.5s, and the cooling mode is water cooling;
after the heat treatment, hardness of each zone was measured by a Rockwell hardness tester, and the results are reported in Table 2, where 0 in one zone in Table 1 is the end face position of the small cylinder;
TABLE 2 hardness distribution after high frequency local quenching using tooling 2
Example 2
As shown in fig. 2a, 2b and 1c, a tool capable of realizing high-frequency induction local quenching uniformity of a two-section part, wherein the two-section part 1 comprises a small cylinder and a large cylinder, the small cylinder and the large cylinder are coaxial, the diameter of the small cylinder is smaller than that of the large cylinder, the small cylinder and the large cylinder are in an integrated structure, the connecting part of the small cylinder and the large cylinder is in smooth transition, and the connecting part of the small cylinder and the large cylinder is marked as a smooth transition section;
the material of frock 3 be alloy tool steel, the frock is the cylinder that has the hole, the cylindrical external diameter that has the hole is the same with the external diameter of big cylinder, the diameter ratio of the cylindrical hole that has the hole is little cylindrical external diameter and the corresponding part of external diameter of smooth transition section all big 0.1 mm's meaning is: the small cylinder and the smooth transition section can be just sleeved into an inner hole of the cylinder with the inner hole; the inner hole of the cylinder with the inner hole is a countersunk hole and is also a blind hole;
when the heat treatment is carried out, the tool is sleeved on the part.
Example (c): a small cylinder and a large cylinder are coaxial, the outer diameter of the small cylinder is 1.2mm, the length of the small cylinder is 9mm, the outer diameter of the large cylinder is 2.5mm, the length of the large cylinder is 16mm, the small cylinder and the large cylinder are of an integrally formed structure, the connecting part of the small cylinder and the large cylinder is a two-section part in smooth transition, the small cylinder and the large cylinder are placed on a station of high-frequency local quenching equipment to carry out the same heat treatment, and the parameters of the high-frequency local quenching equipment during the heat treatment are as follows: the grid current is 0.21A, the anode current is 0.2A, the anode voltage is 6.5kV, the heating time is 7.5s, and the cooling mode is water cooling;
after the heat treatment, the hardness of each zone was measured by a Rockwell hardness tester, and the results are shown in Table 3. The position of 0 in a zone in table 1 is the position of the end face of the small cylinder;
TABLE 3 hardness distribution of high frequency local quench before use of tooling
Another two-section part which is the same as the part is taken, a tool is sleeved on the part and is placed on a station of the high-frequency local quenching equipment for heat treatment, and the parameters of the high-frequency local quenching equipment during the heat treatment are as follows: the grid current is 0.21A, the anode current is 0.2A, the anode voltage is 6.5kV, the heating time is 7.5s, and the cooling mode is water cooling;
after the heat treatment, the hardness of each zone was measured by a Rockwell hardness tester, and the results are shown in Table 4. The position of 0 in a zone in table 1 is the position of the end face of the small cylinder;
TABLE 4 hardness distribution of high frequency local quench after using tooling 3
Example 3
As shown in fig. 3a, 3b and 1c, a tool capable of realizing high-frequency induction local quenching uniformity of a two-section part, wherein the two-section part 1 comprises a small cylinder and a large cylinder, the small cylinder and the large cylinder are coaxial, the diameter of the small cylinder is smaller than that of the large cylinder, the small cylinder and the large cylinder are in an integrated structure, the connecting part of the small cylinder and the large cylinder is in smooth transition, and the connecting part of the small cylinder and the large cylinder is marked as a smooth transition section;
the material of frock 4 be alloy tool steel, the cylinder of frock for having the hole of diameter variation in size, the cylindrical external diameter that has the hole of diameter variation in size is than big cylindrical external diameter 2mm, the little cylindrical external diameter of the diameter ratio of the cylindrical hole that has the hole of diameter variation in size, the external diameter of smooth transition section and big cylindrical external diameter are big 0.15mm, the diameter ratio of the cylindrical hole that has the hole of diameter variation in size is little cylindrical external diameter, the external diameter of smooth transition section and big cylindrical external diameter are big 0.15 mm's meaning is: the small cylinder, the smooth transition section and the large cylinder can be just sleeved into the inner hole of the cylinder with inner holes with different diameters, and the inner hole is also a blind hole.
When the heat treatment is carried out, the tool is sleeved on the part.
Example (c): a small cylinder and a large cylinder are coaxial, the outer diameter of the small cylinder is 1.2mm, the length of the small cylinder is 9mm, the outer diameter of the large cylinder is 2.5mm, the length of the large cylinder is 16mm, the small cylinder and the large cylinder are of an integrally formed structure, the connecting part of the small cylinder and the large cylinder is a two-section part in smooth transition, the small cylinder and the large cylinder are placed on a station of high-frequency local quenching equipment for heat treatment, and the parameters of the high-frequency local quenching equipment during the heat treatment are as follows: the grid current is 0.21A, the anode current is 0.2A, the anode voltage is 6.5kV, the heating time is 7.5s, and the cooling mode is water cooling;
after the heat treatment, the hardness of each zone was measured by a Rockwell hardness tester, and the results are shown in Table 5. The position of 0 in a zone in table 1 is the position of the end face of the small cylinder;
TABLE 5 hardness distribution of high frequency local quench before use of tooling
Another two-section part which is the same as the part is taken, a tool is sleeved on the part and is placed on a station of the high-frequency local quenching equipment for carrying out the same heat treatment, and the parameters of the high-frequency local quenching equipment during the heat treatment are as follows: the grid current is 0.21A, the anode current is 0.2A, the anode voltage is 6.5kV, the heating time is 7.5s, and the cooling mode is water cooling;
after the heat treatment, the hardness of each region was measured by a Rockwell hardness tester, and the results are shown in Table 6. The position of 0 in a zone in table 1 is the position of the end face of the small cylinder;
TABLE 6 hardness distribution of high frequency local quench after using tooling 4
The present invention has not been described in detail as is known to those skilled in the art.
Claims (10)
1. A can realize the frock of local quenching homogeneity of two segmentation part high frequency induction, the material of said two segmentation parts is stainless steel, two segmentation parts include little cylinder and big cylinder, little cylinder and big cylinder are coaxial, the diameter of the little cylinder is smaller than the diameter of the big cylinder, the junction of little cylinder and big cylinder is the smooth transition, the junction of marking little cylinder and big cylinder is the smooth transition section;
the method is characterized in that:
the frock for the cylinder that has the hole, the external diameter of the cylinder that has the hole is the same with the external diameter of big cylinder, the diameter ratio of the cylindrical hole that has the hole is big 0.1 ~ 0.15mm than little cylindrical external diameter.
2. The tool capable of realizing high-frequency induction local quenching uniformity of the two-section type part according to claim 1, is characterized in that: the tool is made of alloy tool steel.
3. The tool capable of realizing high-frequency induction local quenching uniformity of the two-section type part according to claim 1, is characterized in that: the inner hole of the cylinder with the inner hole is a blind hole.
4. The tool capable of realizing high-frequency induction local quenching uniformity of the two-section type part according to claim 1, is characterized in that: the small cylinder and the big cylinder are of an integrated structure.
5. A can realize the frock of local quenching homogeneity of two segmentation part high frequency induction, the material of said two segmentation parts is stainless steel, two segmentation parts include little cylinder and big cylinder, little cylinder and big cylinder are coaxial, the diameter of the little cylinder is smaller than the diameter of the big cylinder, the junction of little cylinder and big cylinder is the smooth transition, the junction of marking little cylinder and big cylinder is the smooth transition section;
the method is characterized in that:
the frock for the cylinder that has the step hole, the cylindrical external diameter that has the step hole is the same with the external diameter of big cylinder, the step hole includes the part that the diameter is big and the part that the diameter is little, the diameter ratio of the part that the diameter of the cylindrical hole that has the step hole is big 0.1 ~ 0.15mm than the external diameter of smooth transition section, the diameter ratio of the part that the diameter of the cylindrical hole that has the step hole is little is big 0.1 ~ 0.15mm than little cylindrical external diameter.
6. The tool capable of realizing high-frequency induction local quenching uniformity of the two-section type part according to claim 5, is characterized in that: the tool is made of alloy tool steel.
7. The tool capable of realizing high-frequency induction local quenching uniformity of the two-section type part according to claim 5, is characterized in that: the inner hole of the cylinder with the inner hole is a blind hole.
8. A can realize the frock of local quenching homogeneity of two segmentation part high frequency induction, the material of said two segmentation parts is stainless steel, two segmentation parts include little cylinder and big cylinder, little cylinder and big cylinder are coaxial, the diameter of the little cylinder is smaller than the diameter of the big cylinder, the junction of little cylinder and big cylinder is the smooth transition, the junction of marking little cylinder and big cylinder is the smooth transition section;
the method is characterized in that:
the frock for the cylinder that has the step hole, the cylindrical external diameter that has the hole is 2 ~ 4mm bigger than big cylindrical external diameter, the step hole includes the part that the diameter is big, the great part of diameter and the part that the diameter is little, the diameter ratio of the great part of diameter of the cylindrical hole that has the step hole is 0.1 ~ 0.15mm big than big cylindrical external diameter, the diameter ratio of the great part of diameter of the cylindrical hole that has the step hole is 0.1 ~ 0.15mm big than the external diameter of smooth transition section, the diameter ratio of the little part of diameter of the cylindrical hole that has the step hole is 0.1 ~ 0.15mm big than the little cylindrical external diameter of diameter.
9. The tool capable of realizing high-frequency induction local quenching uniformity of the two-section type part according to claim 8, is characterized in that: the tool is made of alloy tool steel.
10. The tool capable of realizing high-frequency induction local quenching uniformity of the two-section type part according to claim 8, is characterized in that: the inner hole of the cylinder with the inner hole is a blind hole.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134307A (en) * | 2021-10-27 | 2022-03-04 | 常州丰川机电有限公司 | Local quenching process, local quenching tool and small shaft part |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134307A (en) * | 2021-10-27 | 2022-03-04 | 常州丰川机电有限公司 | Local quenching process, local quenching tool and small shaft part |
| CN114134307B (en) * | 2021-10-27 | 2023-09-12 | 常州丰川机电有限公司 | Local quenching process, local quenching tool and small shaft part |
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