Heat treatment device and method for ultrahigh-strength steel cup-shaped component

Abstract

The invention relates to the field of metal materials, and discloses a heat treatment device and method for an ultrahigh-strength steel cup-shaped component, the cup-shaped component comprises a component body, a blind hole is formed in the component body, and the device comprises a first spraying structure arranged outside the component body in a surrounding mode and a second spraying structure inserted in the blind hole of the component body; the first spraying structures and the second spraying structures are connected with driving mechanisms correspondingly, and the driving mechanisms drive the corresponding first spraying structures and second spraying structures to rotate with the axis of the blind hole as the center. According to the external-spraying and internal-spraying device provided by the invention, high-performance quenching treatment can be realized by cooperating with process parameter control, and the uniformity and consistency of the structure property of the cup-shaped component and the heat treatment efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the field of materials, and in particular to a heat treatment device and method for an ultra-high-strength steel cup-shaped component. Background Art

[0002] Generally, after quenching and tempering treatment, the tensile strength of ultra-high-strength steel is not less than 1500MPa, and the hardness reaches HRC55 or above. It has high load-bearing capacity, good deformation resistance, and is wear-resistant and high-temperature resistant. It is widely used in key components of aviation, aerospace, weapons, ships and other equipment, as well as high-end civilian equipment.

[0003] The heat treatment process for ultra-high-strength steel components (typical ultra-high-strength steel materials include DT300, G50, A100, and 30CrMnSiNi2A) is typically designed as quenching followed by liquid nitrogen cryogenic treatment followed by low-temperature tempering. Quenching and liquid nitrogen cryogenic treatment achieve a fully martensitic structure, enhancing the strength and hardness of the ultra-high-strength and tough steel. After tempering, the microstructure primarily consists of high-density lath-tempered martensite in varying orientations, carbides, and a small amount of reversed austenite and twins, which are evenly distributed and fine. This improves component strength and toughness while reducing or eliminating internal stress, stabilizing dimensions, and minimizing deformation and cracking.

[0004] At present, the main failure modes of ultra-high-strength steel cup-shaped components during service are fracture and crushing. Fracture is a major bottleneck restricting their application in harsh and complex service environments. It is particularly prominent in the use of ultra-high-strength steel cup-shaped components for new-generation high-end equipment such as weapons, aerospace, and ships. The reason is that the cup-shaped components adopt traditional immersion cooling method during quenching. The water vapor expansion or air in the cup-shaped spray barrel hinders the coolant. At the same time, the coolant is not conducive to circulation in the cup-shaped spray barrel. The cooling speed of different parts varies greatly, resulting in large fluctuations in the transverse and longitudinal mechanical properties of the components. Under high-speed impact and collision, the transverse and longitudinal deformation of the components are not coordinated well, resulting in fracture, crushing and other failures. Summary of the Invention

[0005] The present invention aims to overcome existing issues in ultra-high-strength and toughness cup-shaped components, such as large differences in cooling rates during heat treatment due to deep blind holes in the components, resulting in uneven microstructure and properties and insufficient toughness. The present invention provides a device and method for heat-treating ultra-high-strength steel cup-shaped components. This device utilizes an external shower and internal spray method, which facilitates improved cooling uniformity of the cup-shaped components.

[0006] In order to achieve the above-mentioned objectives, the first aspect of the present invention provides a heat treatment device for an ultra-high-strength steel cup-shaped component, wherein the cup-shaped component includes a component body, and a blind hole is provided in the component body, wherein the device includes a first spray structure arranged around the outside of the component body and a second spray structure inserted into the blind hole of the component body, wherein the first spray structure and the second spray structure are respectively connected to a driving mechanism, and the driving mechanism drives the corresponding first spray structure and second spray structure to rotate around the axis of the blind hole.

[0007] The second aspect of the present invention provides a heat treatment method for an ultra-high-strength steel cup-shaped component, wherein the method is performed using the device described in the first aspect of the present invention, wherein the spraying time of the first spray structure and the second spray structure is 30-60 minutes. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the matching state of the heat treatment device and the cup-shaped component;

[0009] Figure 2 It is a schematic diagram of the three-dimensional structure of the cup-shaped component and the spray barrel;

[0010] Figure 3 It is a schematic diagram of the three-dimensional structure of the spray barrel;

[0011] Figure 4 It is a schematic diagram of the plane structure of the spray barrel;

[0012] Figure 5 yes Figure 4 AA section view;

[0013] Figure 6 Schematic diagram of the sampling location. DETAILED DESCRIPTION

[0014] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0015] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0016] The endpoints of the ranges and any values disclosed herein are not limited to the precise ranges or values, and these ranges or values should be understood to include values close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

[0017] In addition, the term "and / or" in the specification and claims is used to describe an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0018] Additionally, the term "plurality" in the specification and claims refers to two or more.

[0019] A first aspect of the present invention provides a heat treatment device for an ultra-high-strength steel cup-shaped component, wherein the cup-shaped component includes a component body, and a blind hole is provided in the component body, wherein the device includes a first spray structure arranged around the outside of the component body and a second spray structure inserted into the blind hole of the component body, wherein the first spray structure and the second spray structure are respectively connected to a driving mechanism, and the driving mechanism drives the corresponding first spray structure and second spray structure to rotate around the axis of the blind hole.

[0020] Typical ultra-high strength steel materials include DT300, G50, A100, 30CrMnSiNi2A, etc., and the present invention can effectively process them.

[0021] Preferably, the component body is vertically arranged, including an end portion located at the top and an elongated cup body located at the bottom, the end portion includes a cylindrical bottom and a truncated cone-shaped transition portion, wherein the bottom is connected to the small end of the transition portion, the cup body is connected to the large end of the transition portion, and the blind hole is provided in the cup body;

[0022] The first spray structure includes a first bracket, which is connected to the driving mechanism. Nozzles are respectively provided on the first bracket corresponding to the bottom and the transition part. The angle between the water outlet direction of the nozzle corresponding to the bottom and the water outlet direction of the nozzle corresponding to the transition part is α, 50°≤α≤75°.

[0023] Due to the special structure of the component body, the metal thickness at the end is large and the mass is high. The thermal energy is high after the insulation is completed, and the quenching performance is relatively more difficult to control. The present invention increases the cooling speed by spraying this part through the external nozzle set, and the other parts of the outer wall rely on the naturally flowing coolant for quenching, which can ensure that the cooling speed of the entire component is basically consistent.

[0024] When the value of α is within a set range, the water outlet direction can be substantially perpendicular to the conical surface of the transition portion, thereby increasing the cooling rate.

[0025] Preferably, the inner diameter of the water outlet of the nozzle is 40-60 mm.

[0026] Preferably, the second spray structure includes a spray barrel having a shape matching that of the blind hole, the spray barrel being inserted into the blind hole and having a plurality of spray holes corresponding to the blind holes. The outer end of the spray barrel is connected to the drive mechanism. Coolant is delivered into the spray barrel via the delivery mechanism and then sprayed out of the spray holes to quench the blind hole. This method can achieve more uniform cooling throughout the blind hole.

[0027] Preferably, the outer wall of the spray barrel is provided with a plurality of slots along its axial direction, each slot being provided with a separator. The separators divide the gap between the spray barrel and the blind hole into a plurality of independent quenching spaces. With this structure, the separators divide the gap between the spray barrel and the blind hole into a plurality of independent quenching spaces, thereby preventing interference between the sprayed coolants and improving quenching uniformity.

[0028] Preferably, the slot is a T-shaped slot; the separator is an Ω-shaped spring piece, the two free ends of the spring piece are respectively clamped in the corresponding T-shaped slot, and the top of the spring piece abuts against the inner wall of the blind hole, thereby dividing the gap between the spray cylinder and the blind hole into multiple independent quenching spaces, and a row of water spray holes is provided on the spray cylinder between two adjacent spring pieces along its axial direction.

[0029] During use, the spray barrel is controlled to rotate and spray at a set speed. Most of the sprayed water directly acts on the inner wall of the blind hole of the cup-shaped component for quenching. Another part of the water splashes to the angle between the Ω-shaped spring piece and the inner wall of the cup-shaped component and quenches the corresponding part. The water after quenching and heating falls and flows out.

[0030] Through the Ω-shaped spring piece, the inner wall of the cup blind hole can be divided into several independent and stable quenching spaces without affecting the rotation of the spray barrel, avoiding the mutual drying of water sprayed from different water outlets in the radial direction, significantly improving the uniformity of the quenching process, and at the same time avoiding the formation of water film on the inner wall of the cup-shaped component and affecting the quenching effect, greatly reducing the accumulation of water vapor in the inner cavity of the cup-shaped component, and adaptively adapting to the inner wall of the cup-shaped component with different apertures within the allowable aperture range.

[0031] Preferably, the diameter of the water spray holes is 2-5 mm, and the spacing between adjacent water spray holes is 8-20 mm.

[0032] Preferably, the ratio of the total length of the component body to the depth of the blind hole is 1.1-1.2.

[0033] Preferably, the ratio of the inner diameter to the outer diameter of the blind hole is 0.7-0.74, and the ratio of the depth to the inner diameter of the blind hole is 5-5.5:1.

[0034] Preferably, the total length of the component body is 1300-1800 mm, the depth of the blind hole is 1000-1600 mm, the inner diameter of the blind hole is 200-300 mm, and the outer diameter of the blind hole is 300-400 mm.

[0035] The second aspect of the present invention provides a heat treatment method for an ultra-high-strength steel cup-shaped component, wherein the method is performed using the device described in the first aspect of the present invention, wherein the spraying time of the first spray structure and the second spray structure is 30-60 minutes.

[0036] Preferably, the rotation speed of the first spray structure is 6-30 r / min, and the pressure of the liquid sprayed by the first spray structure is 0.2-1 MPa;

[0037] And / or, the rotation speed of the second spray structure is 6-30 r / min, and the pressure of the liquid sprayed by the first spray structure is 0.2-1 MPa.

[0038] Preferably, the rotation speed of the first spray structure is 15-30 r / min, the pressure of the liquid sprayed by the first spray structure is 0.6-1 MPa, the temperature is 30-60°C, and the spraying interval time does not exceed 0.1s;

[0039] And / or, the rotation speed of the second spray structure is 6-12 r / min, the pressure of the liquid sprayed by the second spray structure is 0.2-0.6 MPa, the temperature is 30-60° C., and the spraying interval time does not exceed 0.1 s.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. The device provided by the present invention abandons the traditional immersion quenching method. By performing spray treatment on the inside and outside of the component at the same time, it is beneficial to improve the cooling uniformity of various parts of the cup-shaped component, achieve high-performance quenching treatment, and improve the lateral and longitudinal mechanical properties of the component.

[0042] 2. The external showering and internal spraying device provided by the present invention cooperates with the process parameter control to further improve the uniformity of the organizational performance of the cup-shaped component and the heat treatment efficiency.

[0043] 3. After heat treatment, the cup-shaped components obtained using the method provided by this invention exhibit tensile strength fluctuations of ≤50 MPa, elongation fluctuations of ≤4%, impact energy absorption fluctuations of ≤4 J, and average grain size deviations of ≤6 μm. This effectively addresses the technical challenge of synergistically controlling the strength and toughness of ultra-high-strength and toughness steel cup-shaped components.

[0044] In the following examples and comparative examples, unless otherwise specified, all reagents or instruments used without manufacturer identification are commercially available. If specific conditions are not specified in the examples, conventional conditions or those recommended by the manufacturer were followed.

[0045] The high-strength and tough steel cup-shaped component structures involved in the following examples and comparative examples are as follows: Figure 1 As shown, the cup-shaped component includes a component body 1 with a blind hole therein, giving it an overall cup shape. The component body 1 is vertically arranged and includes an end portion located at the top and an elongated cup body 1c located at the bottom. The end portion includes a cylindrical bottom 1a and a truncated cone-shaped transition portion 1b, wherein the bottom 1a is connected to the small end of the transition portion 1b, and the cup body 1c is connected to the large end of the transition portion 1b. The blind hole is provided in the cup body 1c.

[0046] The structure of the heat treatment device used in the following Examples 1-2 and 4 is as follows: Figure 1-5 As shown, the device includes a first spray structure arranged around the outside of the component body 1 and a second spray structure inserted in the blind hole of the component body 1, wherein the first spray structure and the second spray structure are respectively connected to a driving mechanism (not shown in the figure), and the driving mechanism drives the corresponding first spray structure and second spray structure to rotate around the axis of the blind hole.

[0047] The first spray structure includes a first bracket 2, which is connected to the driving mechanism (not shown in the figure). The driving mechanism drives the first spray structure to rotate around the component body 1, and its rotation center coincides with the axis of the blind hole. The first bracket 2 is provided with nozzles 3 corresponding to the bottom 1a and the transition part 1b, respectively. The angle between the water outlet direction of the nozzle 3 corresponding to the bottom 1a and the water outlet direction of the nozzle 3 corresponding to the transition part 1b is α, 50°≤α≤75°. Specifically, the water outlet direction of the nozzle 3 corresponding to the bottom 1a is perpendicular to the bottom 1a, and the water outlet direction of the nozzle 3 corresponding to the transition part 1b is basically perpendicular to the conical surface of the transition part 1b. The inner diameter of the water outlet of the nozzle 3 is 40-60mm. In order to achieve uniform quenching, four nozzles 3 are evenly arranged on the first bracket 2 around the transition part 1b. Therefore, when the first spraying structure sprays the bottom 1a and the transition portion 1b, the sprayed coolant not only quenches the bottom 1a and the transition portion 1b, but also flows down naturally under the action of gravity, thereby quenching the outer wall portion of the cup body 1c.

[0048] The second spray structure includes a spray cylinder 4, the shape of which matches the blind hole. The spray cylinder 4 is inserted into the blind hole. A plurality of water spray holes 5 are provided on the spray cylinder 4 corresponding to the blind holes. The outer end of the spray cylinder 4 is connected to the driving mechanism (not shown in the figure). The driving mechanism drives the second spray structure to rotate around the axis of the blind hole. The diameter of the water spray hole is 2-5 mm, and the spacing between adjacent water spray holes 5 is 8-20 mm.

[0049] A plurality of slots are provided on the outer wall of the spray cylinder 4 along its axial direction. A separator 6 is installed in each of the slots. The separator 6 divides the gap between the spray cylinder 4 and the blind hole into a plurality of independent quenching spaces.

[0050] The slot is a T-shaped slot; the separator 6 is a spring piece with an Ω-shaped cross-section and a wall thickness of 0.1 mm. The two free ends of the spring piece are respectively clamped in the two horizontal parts of the corresponding T-shaped slot, and the top of the spring piece extends out of the vertical part of the T-shaped slot and abuts against the inner wall of the blind hole, thereby dividing the gap between the spray cylinder 4 and the blind hole into multiple independent quenching spaces. A row of water spray holes 5 is provided on the spray cylinder 4 between two adjacent spring pieces along its axial direction.

[0051] The above-mentioned heat treatment device is very suitable for quenching components at a temperature of 860-920°C. Combined with the control of the quenching process conditions, the head tensile strength of the cup-shaped component can reach above 1720MPa, the specified plastic elongation strength can reach above 1500MPa, the elongation after fracture can reach above 9%, the impact absorption energy can reach above 60J, and the average grain size can be finer than 27μm.

[0052] Example 1

[0053] Based on the structure of the above heat treatment device, in this example: the material of the cup-shaped component is DT300 steel, the outer diameter of the cup body 1c is 320mm, the inner hole of the blind hole is 230mm, the depth of the blind hole is 1160mm, and the total length of the component body 1 is 1360mm.

[0054] The inner diameter of the water outlet of the nozzle 3 of the heat treatment device is 50 mm, α is 60°, the diameter of the water spray hole 5 is 3 mm, and the distance between adjacent water spray holes 5 is 10 mm.

[0055] against Figure 1 The cup-shaped component shown is subjected to forced cooling treatment (the component temperature before forced cooling treatment is controlled at 900±10°C). The specific steps are as follows:

[0056] The coolant temperature of the first spray structure is controlled to be 40±5°C, the coolant outlet pressure is 0.8MPa, the water outlet time interval of the five nozzles 3 is no more than 0.1s (about 0.05s), and the rotation speed of the first spray structure is 30r / min.

[0057] The coolant temperature of the water spray hole of the second spray structure is controlled to be 40±5°C, the coolant outlet pressure is 0.5MPa, the water outlet time interval is 0.05s, and the rotation speed of the second spray structure is 12r / min.

[0058] The cooling time of external showering and internal spraying was controlled to be 45 minutes respectively.

[0059] Example 2

[0060] Based on the structure of the above heat treatment device, in this example: the material of the cup-shaped component is A100 steel, the outer diameter of the cup body 1c is 380mm, the inner hole of the blind hole is 280mm, the depth of the blind hole is 1510mm, and the total length of the component body 1 is 1750mm.

[0061] The inner diameter of the water outlet of the nozzle 3 of the heat treatment device is 60 mm, α is 75°, the diameter of the water spray hole 5 is 5 mm, and the distance between adjacent water spray holes 5 is 15 mm.

[0062] against Figure 1The cup-shaped component shown is subjected to forced cooling treatment (the construction temperature before forced cooling treatment is controlled to 885±15°C), and the specific steps are as follows:

[0063] The coolant temperature of the first spray structure is controlled to be 50±5°C, the coolant outlet pressure is 1MPa, the water outlet time interval of the five nozzles 3 is no more than 0.1s (about 0.05s), and the rotation speed of the first spray structure is 15r / min.

[0064] The coolant temperature of the water spray hole of the second spray structure is controlled to be 50±5°C, the coolant outlet pressure is 0.6MPa, the water outlet time interval is 0.05s, and the rotation speed of the second spray structure is 12r / min.

[0065] The cooling time of external showering and internal spraying is controlled to be 60 minutes respectively.

[0066] The samples obtained in Example 1-2 were Figure 6 Sampling was performed at the positions shown, where ac is a schematic diagram of the sampling position at the head cone, d is a schematic diagram of the sampling position at the bottom of the cup body, e is a schematic diagram of the sampling position in the middle of the cup body, and f is a schematic diagram of the sampling position at the tail of the cup body.

[0067] The tensile strength is carried out in accordance with GB / T 228.1, the specified plastic extension strength is carried out in accordance with GB / T 228.1, the elongation after fracture is carried out in accordance with GB / T 228.1, the impact absorption energy test is carried out in accordance with GB / T 229, the compressive strength is carried out in accordance with GJB 8799, and the average grain size is carried out in accordance with GB / T 6394.

[0068] The test results of Example 1 are shown in Table 1.

[0069] Table 1

[0070]

[0071] The test results of Example 2 are shown in Table 2.

[0072] Table 2

[0073]

[0074] Ultra-high-strength steel cup-shaped structural components require the head to have high strength and high toughness to resist erosion, deformation and damage under high-speed impact loads. Through heat treatment, the tensile strength, impact toughness and high strain rate dynamic compression strength from the outer surface to the core (including transverse and longitudinal directions) of the component are improved to ensure integrity after penetrating a certain strength and thickness of reinforced concrete.

[0075] It can be seen from Tables 1 and 2 that the tensile strength, specified plastic extension strength, and elongation after fracture of the cup-shaped component head prepared by the present invention are better than those of other parts. Overall, the tensile strength of the head reaches more than 1750 MPa, the elongation after fracture reaches more than 11%, the impact absorption energy reaches more than 61 J, and the average grain size is finer than 23 μm.

[0076] The cup-shaped component prepared by the present invention has a tensile strength fluctuation of ≤50MPa, an elongation after fracture fluctuation of ≤4%, an impact absorption energy fluctuation of ≤4J, and an average grain size deviation of ≤6μm, effectively solving the technical problem of surface strengthening of ultra-high-strength and toughness steel cup-shaped components.

[0077] Example 3

[0078] The method of Example 1 is followed, with the only difference being that the spray barrel 4 of the heat treatment device does not have a slot and is not equipped with an Ω-shaped spring.

[0079] The mechanical tests of the prepared samples were carried out in the same manner as in Example 1, and the results are shown in Table 3.

[0080] Table 3

[0081]

[0082] From the comparative analysis of Tables 1 and 3, it can be seen that when the Ω-shaped spring is not installed, the elongation after fracture and the compressive strength of the cup body of the components manufactured using the same process decrease to varying degrees, while the average grain size of the components increases significantly.

[0083] Example 4

[0084] The method of Example 1 is followed, except that the spraying is continuous, that is, the spraying interval is 0 s.

[0085] The mechanical tests of the prepared samples were carried out in the same manner as in Example 1, and the results are shown in Table 4.

[0086] Table 4

[0087]

[0088] Through the comparative analysis of Tables 1 and 4, it can be seen that when the interval spraying is not carried out as required, the tensile strength, specified plastic extension strength, elongation after fracture, impact absorption energy, compressive strength, etc. of the components all decrease to varying degrees, while the average grain size increases significantly.

[0089] Comparative Example 1

[0090] As a comparative example of Example 1, the DT300 steel cup-shaped component in Example 1 was cooled by a conventional immersion method, and the temperature of the coolant was 40±5°C.

[0091] The mechanical test of the sample prepared in Comparative Example 1 was carried out in the same manner as in Example 1, and the results are shown in Table 5.

[0092] Table 5

[0093]

[0094] A comparative analysis of Tables 1 and 5 shows that conventional immersion quenching significantly reduces tensile strength, specified plastic extension strength, elongation after fracture, impact energy absorbed, and compressive strength at all locations, while significantly increasing average grain size. Key indicators such as tensile strength, impact energy absorbed, and average grain size fluctuate significantly after heat treatment, and the performance of the component's nose cone is no better than that of other locations. The integrity of the nose cone cannot be guaranteed when used to penetrate reinforced concrete targets of a certain strength and thickness.

[0095] Comparative Example 2

[0096] As a comparative example of Example 1, the method of Example 1 is followed, with the only difference being that both the first spray structure and the second spray structure do not rotate.

[0097] The mechanical test of the sample prepared in Comparative Example 1 was carried out in the same manner as in Example 1, and the results are shown in Table 6.

[0098] Table 6

[0099]

[0100] A comparative analysis of Tables 1 and 6 shows that when the spray structure does not rotate, the tensile strength, specified plastic extension strength, elongation after fracture, impact absorbed energy, and compressive strength of the components all increase to varying degrees, but their fluctuations are large. The fluctuations of tensile strength and specified plastic extension strength are as high as 100 MPa, and the fluctuation of impact absorbed energy is as high as 6 J.

[0101] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention may be subjected to various simple modifications, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A heat treatment device for an ultra-high-strength steel cup-shaped component, wherein the cup-shaped component comprises a component body with a blind hole provided therein, characterized in that: The device includes a first spray structure arranged around the outside of the component body and a second spray structure inserted into the blind hole of the component body, wherein the first spray structure and the second spray structure are respectively connected to a driving mechanism, and the driving mechanism drives the corresponding first spray structure and second spray structure to rotate around the axis of the blind hole.

2. The device according to claim 1, wherein The component body is vertically arranged, and includes an end portion located at the top and an elongated cup body located at the bottom, the end portion includes a cylindrical bottom and a truncated cone-shaped transition portion, wherein the bottom is connected to the small end of the transition portion, the cup body is connected to the large end of the transition portion, and the blind hole is provided in the cup body; The first spray structure includes a first bracket, which is connected to the driving mechanism. Nozzles are respectively provided on the first bracket corresponding to the bottom and the transition part. The angle between the water outlet direction of the nozzle corresponding to the bottom and the water outlet direction of the nozzle corresponding to the transition part is α, 50°≤α≤75°.

3. The device according to claim 2, wherein The inner diameter of the water outlet of the nozzle is 40-60 mm.

4. The device according to any one of claims 1 to 3, wherein: The second spray structure includes a spray cylinder, the shape of which matches the blind hole. The spray cylinder is inserted into the blind hole and has multiple water spray holes corresponding to the blind holes. The outer end of the spray cylinder is connected to the driving mechanism.

5. The device according to claim 4, wherein A plurality of slots are provided on the outer wall of the spray cylinder along its axial direction. A separator is installed in each of the slots. The separator divides the gap between the spray cylinder and the blind hole into a plurality of independent quenching spaces.

6. The device according to claim 5, wherein The card slot is a T-shaped slot; The separator is an Ω-shaped spring piece, the two free ends of which are respectively clamped in the corresponding T-shaped groove, and the top of the spring piece abuts against the inner wall of the blind hole, thereby dividing the gap between the spray cylinder and the blind hole into multiple independent quenching spaces. A row of water spray holes is provided on the spray cylinder between two adjacent spring pieces along its axial direction.

7. The device according to claim 6, wherein The diameter of the water spray holes is 2-5 mm, and the spacing between adjacent water spray holes is 8-20 mm.

8. A heat treatment method for an ultra-high strength steel cup-shaped component, characterized in that: The method is carried out using the device according to any one of claims 1 to 7, wherein the spraying time of the first spraying structure and the second spraying structure is 30-60 minutes.

9. The method according to claim 8, wherein The rotation speed of the first spray structure is 6-30 r / min, and the pressure of the liquid sprayed by the first spray structure is 0.2-1 MPa; And / or, the rotation speed of the second spray structure is 6-30 r / min, and the pressure of the liquid sprayed by the first spray structure is 0.2-1 MPa.

10. The method according to claim 9, wherein: The rotation speed of the first spray structure is 15-30 r / min, the pressure of the liquid sprayed by the first spray structure is 0.6-1 MPa, the temperature is 30-60°C, and the spraying interval time does not exceed 0.1s; And / or, the rotation speed of the second spray structure is 6-12 r / min, the pressure of the liquid sprayed by the second spray structure is 0.2-0.6 MPa, the temperature is 30-60° C., and the spraying interval time does not exceed 0.1 s.

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