CN113814683A - Precise thread machining process for metal material - Google Patents
Precise thread machining process for metal material Download PDFInfo
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- CN113814683A CN113814683A CN202111193798.2A CN202111193798A CN113814683A CN 113814683 A CN113814683 A CN 113814683A CN 202111193798 A CN202111193798 A CN 202111193798A CN 113814683 A CN113814683 A CN 113814683A
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Abstract
The invention discloses a precise thread machining process for a metal material, and particularly relates to the technical field of thread machining processes. In the first step, the metal matrix is subjected to plasma cleaning treatment, so that the surface cleanliness of the metal matrix can be effectively improved; in the second step, cladding the cladding base material A on the surface of the metal matrix by laser cladding to form a first remelting cladding; in the third step, the first remelting coating is threaded through thread turning; in the fourth step, cladding base material B is plasma-clad on the surface of the semi-finished product thread to form a second cladding layer; the first remelting coating formed by the cladding base material A is a copper alloy soft metal layer, so that threads can be conveniently turned, the cladding base material B is cladded on the surfaces of the threads, a second remelting coating can be effectively formed on the surfaces of the threads to protect the threads, and meanwhile, the second remelting coating is combined with the first remelting coating, so that the hardness, the wear resistance and the low-temperature resistance of the precise threads can be effectively improved.
Description
Technical Field
The invention relates to the technical field of thread machining processes, in particular to a metal material precision thread machining process.
Background
Thread machining is a process of machining a workpiece by cutting, turning, milling, grinding and the like using a tool for making a thread, and generally refers to a method of machining a thread on a workpiece using a forming tool or an abrasive tool, and mainly includes turning, milling, tapping, threading, grinding, whirling and the like. The threads can be classified according to the tooth type: triangular, trapezoidal, rectangular, saw-tooth and circular arc threads; according to the screw thread turning direction, the method comprises the following steps: left-handed and right-handed; the number of the spiral lines can be divided into: single and multiple wires; the method is divided into the following steps according to the shape of a thread parent: a cylinder and a cone.
When the existing metal material is used for precision thread machining, the threads are mostly thin due to high precision required by the threads, and abrasion, deformation and damage are easy to occur in the using process.
Disclosure of Invention
In order to overcome the above defects of the prior art, embodiments of the present invention provide a precision thread machining process for metal materials.
A precise thread machining process for a metal material comprises the following specific treatment steps:
the method comprises the following steps: carrying out plasma cleaning treatment on the metal matrix material to obtain a pretreated metal matrix;
step two: coating the cladding base material A on the surface of the metal matrix in the step one, and then carrying out laser cladding processing to form a first remelting coating on the surface of the metal matrix;
step three: performing thread turning processing on the surface of the first remelting coating prepared in the step two to obtain a semi-finished thread;
step four: coating the cladding base material B on the surface of the semi-finished product thread prepared in the third step, and then carrying out plasma cladding treatment to form a second cladding layer on the surface of the semi-finished product thread so as to finish the metal material precision thread processing technology;
the cladding base material A comprises the following components in percentage: ni: 15.6-16.6% of Mg: 5.6-6.6%, Pb: 15.6-16.6%, Sn: 1.6-2.6% of Cu and inevitable trace impurities as the rest;
the preparation process of the cladding base material A comprises the following specific preparation steps:
s1: putting the raw materials of the cladding base material A into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend a;
s2: and (4) carrying out ultrasonic gas atomization treatment on the mixture a prepared in the step (S1) to obtain a cladding base material A.
The cladding base material B comprises the following components in percentage: al: 12.4-13.4%, Zn: 15.6-16.6%, Cr: 8.4-9.4%, Si: 5.6-6.6%, C: 0.1-0.3%, and the balance of Fe and inevitable trace impurities;
the preparation process of the cladding base material B comprises the following specific preparation steps:
(1): putting the raw materials of the cladding base material B into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend material B;
(2): carrying out smelting vacuum gas atomization treatment on the blend b prepared in the step (1) to obtain a cladding base material c;
(3): and (3) performing spark plasma sintering on the cladding base material c prepared in the step (2) to obtain a cladding base material B.
Further, the cladding base material A comprises the following components in percentage: ni: 15.6%, Mg: 5.6%, Pb: 15.6%, Sn: 1.6 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 12.4%, Zn: 15.6%, Cr: 8.4%, Si: 5.6%, C: 0.1 percent, and the balance of Fe and inevitable trace impurities.
Further, the cladding base material A comprises the following components in percentage: ni: 16.6%, Mg: 6.6%, Pb: 16.6%, Sn: 2.6 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 13.4%, Zn: 16.6%, Cr: 9.4%, Si: 6.6%, C: 0.3 percent, and the balance of Fe and inevitable trace impurities.
Further, the cladding base material A comprises the following components in percentage: ni: 16.1%, Mg: 6.1%, Pb: 16.1%, Sn: 2.1 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 12.9%, Zn: 16.1%, Cr: 8.9%, Si: 6.1%, C: 0.2 percent, and the balance of Fe and inevitable trace impurities.
Further, in step S1, the steam consumption of the steam kinetic energy mill is 1800-2400 kg/h, the steam pressure is 15-25 bar, and the steam temperature is 310-330 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1450-1550 ℃, the flow rate of ultrasonic gas flow is Mach 2-2.5, the pulse frequency of the ultrasonic gas flow is 80-100 KHz, the pressure of the gas flow is 30-40 Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1800-2000 kg/h, the steam pressure is 20-24 bar, and the steam temperature is 310-330 ℃; in the step (2), the pressure in a vacuum state is 5-7 KPa, the airflow pressure is 6-8 Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 40-50 MPa, pulse direct current of 1700-1800A is introduced, and the heat preservation time is 3-5 min at 800-950 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
Further, in step S1, the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 15bar, and the steam temperature is 310 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1450 ℃, the flow rate of ultrasonic gas flow is Mach 2, the pulse frequency of ultrasonic gas flow is 80KHz, the pressure of gas flow is 30Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 20bar, and the steam temperature is 310 ℃; in the step (2), the pressure in the vacuum state is 5KPa, the airflow pressure is 6Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 40MPa, 1700A pulse direct current is introduced, and the heat preservation time is 3min at 800 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
Further, in step S1, the steam consumption of the steam kinetic energy mill is 2400kg/h, the steam pressure is 25bar, and the steam temperature is 330 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1550 ℃, the flow rate of ultrasonic gas flow is Mach 2.5, the pulse frequency of ultrasonic gas flow is 100KHz, the gas flow pressure is 40Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 2000kg/h, the steam pressure is 24bar, and the steam temperature is 330 ℃; in the step (2), the pressure in the vacuum state is 7KPa, the airflow pressure is 8Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 50MPa, 1800A pulse direct current is introduced, and the heat preservation time is 5min at 950 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
Further, in step S1, the steam consumption of the steam kinetic energy mill is 2100kg/h, the steam pressure is 20bar, and the steam temperature is 320 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1500 ℃, the flow rate of ultrasonic gas flow is Mach 2.25, the pulse frequency of ultrasonic gas flow is 90KHz, the pressure of gas flow is 35Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1900kg/h, the steam pressure is 22bar, and the steam temperature is 320 ℃; in the step (2), the pressure in the vacuum state is 6KPa, the airflow pressure is 7Mpa, and the air source is nitrogen; when the discharge plasma sintering is carried out, the pressure is 45MPa, 1750A pulse direct current is introduced, and the heat preservation time is 4min at 875 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
The invention has the technical effects and advantages that:
1. the thread prepared by the metal material precision thread processing technology can effectively improve the surface cleanliness of a metal matrix in the first step; in the second step, a first remelting coating is formed on the surface of the metal substrate; in the third step, thread turning is carried out; in the fourth step, a second re-melting coating layer is formed to finish the thread processing technology, and the second re-melting coating layer is combined with the first re-melting coating layer, so that the hardness, the wear resistance and the low temperature resistance of the precision thread can be effectively improved; the Cu in the cladding base material A is combined with the Fe in the cladding base material B to form Fe-Cu alloy, the Al in the cladding base material B can effectively accelerate the synthesis effect of the Fe-Cu alloy, the structure is compact and has no inclusion, and the thread hardness and the wear resistance can be effectively improved; al and Zn in the cladding base material B are compounded with Ni and Mg in the cladding base material A to form Al-Ni alloy, and meanwhile, Zn and Mg can effectively strengthen the Al-Ni alloy to form Al2Mg3Zn3、MgZn2Phase, in addition Cu and Fe react with Ni to form Al3CuNi phase and Al9The FeNi phase further enhances the high-strength performance of the precision thread in a low-temperature environment, can effectively reduce the abrasion loss of the precision thread and prolong the service life of the precision thread;
2. in the process of preparing cladding base material A and cladding base material B, the blending treatment effect of the raw materials of cladding base material A can be effectively enhanced in step S1, and the subsequent processing is convenient; in the step S2, the cladding base material a with uniform and finer particles can be effectively prepared, and the subsequent laser cladding processing effect on the cladding base material a can be effectively enhanced; in the step (1), the blending treatment effect of the cladding base material B raw material can be effectively enhanced, and the subsequent processing treatment is convenient; in the step (2), the particle uniformity and the fineness of the cladding base material b can be effectively improved; the cladding base material B is prepared in the step (3), so that the safety and stability of the cladding base material B in subsequent cladding processing can be further enhanced, and the contact bonding effect of the cladding base material B and the cladding base material A is improved.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a precise thread machining process for a metal material, which comprises the following specific treatment steps:
the method comprises the following steps: carrying out plasma cleaning treatment on the metal matrix material to obtain a pretreated metal matrix;
step two: coating the cladding base material A on the surface of the metal matrix in the step one, and then carrying out laser cladding processing to form a first remelting coating on the surface of the metal matrix;
step three: performing thread turning processing on the surface of the first remelting coating prepared in the step two to obtain a semi-finished thread;
step four: coating the cladding base material B on the surface of the semi-finished product thread prepared in the third step, and then carrying out plasma cladding treatment to form a second cladding layer on the surface of the semi-finished product thread so as to finish the metal material precision thread processing technology;
the cladding base material A comprises the following components in percentage: ni: 15.6%, Mg: 5.6%, Pb: 15.6%, Sn: 1.6 percent, and the balance of Cu and inevitable trace impurities;
the preparation process of the cladding base material A comprises the following specific preparation steps:
s1: putting the raw materials of the cladding base material A into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend a;
s2: and (4) carrying out ultrasonic gas atomization treatment on the mixture a prepared in the step (S1) to obtain a cladding base material A.
The cladding base material B comprises the following components in percentage: al: 12.4%, Zn: 15.6%, Cr: 8.4%, Si: 5.6%, C: 0.1 percent, and the balance of Fe and inevitable trace impurities;
the preparation process of the cladding base material B comprises the following specific preparation steps:
(1): putting the raw materials of the cladding base material B into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend material B;
(2): carrying out smelting vacuum gas atomization treatment on the blend b prepared in the step (1) to obtain a cladding base material c;
(3): and (3) performing spark plasma sintering on the cladding base material c prepared in the step (2) to obtain a cladding base material B.
In step S1, the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 15bar, and the steam temperature is 310 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1450 ℃, the flow rate of ultrasonic gas flow is Mach 2, the pulse frequency of ultrasonic gas flow is 80KHz, the pressure of gas flow is 30Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 20bar, and the steam temperature is 310 ℃; in the step (2), the pressure in the vacuum state is 5KPa, the airflow pressure is 6Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 40MPa, 1700A pulse direct current is introduced, and the heat preservation time is 3min at 800 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
Example 2:
different from the embodiment 1, the cladding base material A comprises the following components in percentage by weight: ni: 16.6%, Mg: 6.6%, Pb: 16.6%, Sn: 2.6 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 13.4%, Zn: 16.6%, Cr: 9.4%, Si: 6.6%, C: 0.3 percent, and the balance of Fe and inevitable trace impurities.
Example 3:
different from the embodiments 1-2, the cladding base material A comprises the following components in percentage by weight: ni: 16.1%, Mg: 6.1%, Pb: 16.1%, Sn: 2.1 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 12.9%, Zn: 16.1%, Cr: 8.9%, Si: 6.1%, C: 0.2 percent, and the balance of Fe and inevitable trace impurities.
Taking the metal material precision thread processing process in the embodiment 1-3 and the metal material precision thread processing process in the comparison group I, the metal material precision thread processing process in the comparison group II, the metal material precision thread processing process in the comparison group III, the metal material precision thread processing process in the comparison group IV, the metal material precision thread processing process in the comparison group V and the metal material precision thread processing process in the comparison group VI respectively, wherein the metal material precision thread processing process in the comparison group I and the metal material precision thread processing process in the embodiment three-phase ratio cladding base material A do not contain Cu; the metal material precision thread processing technology of the comparison group II does not have Ni in the cladding base material A in the three-phase ratio of the embodiment; the metal material precision thread processing technology of the third comparison group has no Mg in the cladding base material A compared with the three phases of the embodiment; the metal material precision thread processing technology of the comparison group IV does not have Fe in the cladding base material B in the three-phase ratio with the embodiment; the metal material precision thread processing technology of the comparison group V does not have Al in the cladding base material B in the three-phase ratio with the embodiment; compared with the three-phase ratio cladding base material B in the embodiment, the metal material precision thread processing technology of the contrast group VI does not have Zn; the precision threads machined in the three examples and the precision threads processed by the metal material precision thread machining process of the six comparison groups are tested in nine groups respectively, and the test results are shown in the table I:
table one:
as can be seen from table one, example 3 is a preferred embodiment of the present invention; in the first step, the metal matrix is subjected to plasma cleaning treatment, so that the surface cleanliness of the metal matrix can be effectively improved; in the second step, cladding the cladding base material A on the surface of the metal matrix by laser cladding to form a first remelting cladding; in the third step, the first remelting coating is threaded through thread turning; in the fourth step, cladding base material B is plasma-clad on the surface of the semi-finished product thread to form a second cladding layer, and the thread machining process is completed; the first remelting coating formed by the cladding base material A is a copper alloy soft metal layer, so that threads can be conveniently turned, the cladding base material B is cladded on the surfaces of the threads, a second remelting coating can be effectively formed on the surfaces of the threads to protect the threads, and meanwhile, the second remelting coating is combined with the first remelting coating, so that the hardness, the wear resistance and the low-temperature resistance of the precise threads can be effectively improved; the Cu in the cladding base material A is combined with the Fe in the cladding base material B to form Fe-Cu alloy, the Al in the cladding base material B can effectively accelerate the synthesis effect of the Fe-Cu alloy, the structure is compact and has no inclusion, and the thread hardness and the wear resistance can be effectively improved; al and Zn in the cladding base material B are compounded with Ni and Mg in the cladding base material A to form Al-Ni alloy, and meanwhile, Zn and Mg can effectively strengthen the Al-Ni alloy to form Al2Mg3Zn3、MgZn2Phase, in addition Cu and Fe react with Ni to form Al3CuNi phase and Al9The FeNi phase further enhances the high-strength performance of the precision thread in a low-temperature environment, can effectively reduce the abrasion loss of the precision thread and prolongs the service life of the precision thread.
Example 4:
the invention provides a precise thread machining process for a metal material, which comprises the following specific treatment steps:
the method comprises the following steps: carrying out plasma cleaning treatment on the metal matrix material to obtain a pretreated metal matrix;
step two: coating the cladding base material A on the surface of the metal matrix in the step one, and then carrying out laser cladding processing to form a first remelting coating on the surface of the metal matrix;
step three: performing thread turning processing on the surface of the first remelting coating prepared in the step two to obtain a semi-finished thread;
step four: coating the cladding base material B on the surface of the semi-finished product thread prepared in the third step, and then carrying out plasma cladding treatment to form a second cladding layer on the surface of the semi-finished product thread so as to finish the metal material precision thread processing technology;
the cladding base material A comprises the following components in percentage: ni: 16.1%, Mg: 6.1%, Pb: 16.1%, Sn: 2.1 percent, and the balance of Cu and inevitable trace impurities;
the preparation process of the cladding base material A comprises the following specific preparation steps:
s1: putting the raw materials of the cladding base material A into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend a;
s2: and (4) carrying out ultrasonic gas atomization treatment on the mixture a prepared in the step (S1) to obtain a cladding base material A.
The cladding base material B comprises the following components in percentage: al: 12.9%, Zn: 16.1%, Cr: 8.9%, Si: 6.1%, C: 0.2 percent, and the balance of Fe and inevitable trace impurities;
the preparation process of the cladding base material B comprises the following specific preparation steps:
(1): putting the raw materials of the cladding base material B into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend material B;
(2): carrying out smelting vacuum gas atomization treatment on the blend b prepared in the step (1) to obtain a cladding base material c;
(3): and (3) performing spark plasma sintering on the cladding base material c prepared in the step (2) to obtain a cladding base material B.
In step S1, the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 15bar, and the steam temperature is 310 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1450 ℃, the flow rate of ultrasonic gas flow is Mach 2, the pulse frequency of ultrasonic gas flow is 80KHz, the pressure of gas flow is 30Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 20bar, and the steam temperature is 310 ℃; in the step (2), the pressure in the vacuum state is 5KPa, the airflow pressure is 6Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 40MPa, 1700A pulse direct current is introduced, and the heat preservation time is 3min at 800 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
Example 5:
unlike embodiment 4, in step S1, the steam consumption of the steam kinetic energy mill is 2400kg/h, the steam pressure is 25bar, and the steam temperature is 330 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1550 ℃, the flow rate of ultrasonic gas flow is Mach 2.5, the pulse frequency of ultrasonic gas flow is 100KHz, the gas flow pressure is 40Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 2000kg/h, the steam pressure is 24bar, and the steam temperature is 330 ℃; in the step (2), the pressure in the vacuum state is 7KPa, the airflow pressure is 8Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 50MPa, 1800A pulse direct current is introduced, and the heat preservation time is 5min at 950 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
Example 6:
unlike embodiments 4-5, in step S1, the steam consumption of the steam kinetic energy mill was 2100kg/h, the steam pressure was 20bar, and the steam temperature was 320 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1500 ℃, the flow rate of ultrasonic gas flow is Mach 2.25, the pulse frequency of ultrasonic gas flow is 90KHz, the pressure of gas flow is 35Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1900kg/h, the steam pressure is 22bar, and the steam temperature is 320 ℃; in the step (2), the pressure in the vacuum state is 6KPa, the airflow pressure is 7Mpa, and the air source is nitrogen; when the discharge plasma sintering is carried out, the pressure is 45MPa, 1750A pulse direct current is introduced, and the heat preservation time is 4min at 875 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
The precise thread machining process for the metal material prepared in the above examples 4 to 6 was carried out by comparing the precise thread machining process for the metal material prepared in the above examples with the precise thread machining process for the metal material prepared in the above example seven with the precise thread machining process for the metal material prepared in the above example eight with the precise thread machining process for the metal material prepared in the above example nine with the precise thread machining process for the metal material prepared in the above example ten with the precise thread machining process for the metal material prepared in the above example six without the operation of step S1, with the comparison of the precise thread machining process for the metal material prepared in the above example eight with the example six with the operation of step S2, with the comparison of the precise thread machining process for the metal material prepared in the above example nine with the example six with the operation of step (2), with the comparison of the precise thread machining process for the metal material prepared in the above example ten with the precise thread machining process for the metal material prepared in the above example three examples and the precise thread machining process for the metal material prepared in the above example four comparison examples with the above example ten with the precise thread machining process for the above example ten with the comparison, the test was carried out, and the test results are shown in table two:
table two:
as can be seen from table two, example 6 is a preferred embodiment of the present invention; in step S1, the raw material of cladding base material a is subjected to steam kinetic energy milling and blending treatment, so that the blending treatment effect of the raw material of cladding base material a can be effectively enhanced, and the subsequent processing treatment is facilitated; in the step S2, the blend a is subjected to ultrasonic gas atomization, so that a cladding base material a with uniform and finer particles can be effectively prepared, and the subsequent laser cladding processing effect on the cladding base material a can be effectively enhanced; in the step (1), the raw materials of the cladding base material B are subjected to steam kinetic energy grinding and blending treatment, so that the blending treatment effect of the raw materials of the cladding base material B can be effectively enhanced, and the subsequent processing treatment is facilitated; in the step (2), the blend b is subjected to smelting vacuum gas atomization treatment, so that the uniformity and fineness of the particles of the cladding base material b can be effectively improved; and (4) performing spark plasma sintering on the cladding base material c in the step (3) to prepare a cladding base material B, so that the safety and stability of the cladding base material B in subsequent cladding processing can be further enhanced, and the contact bonding effect of the cladding base material B and the cladding base material A is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A precise thread machining process for metal materials is characterized by comprising the following steps: the specific treatment steps are as follows:
the method comprises the following steps: carrying out plasma cleaning treatment on the metal matrix material to obtain a pretreated metal matrix;
step two: coating the cladding base material A on the surface of the metal matrix in the step one, and then carrying out laser cladding processing to form a first remelting coating on the surface of the metal matrix;
step three: performing thread turning processing on the surface of the first remelting coating prepared in the step two to obtain a semi-finished thread;
step four: and (3) coating the cladding base material B on the surface of the semi-finished product thread prepared in the third step, and then carrying out plasma cladding treatment to form a second cladding layer on the surface of the semi-finished product thread so as to finish the metal material precision thread processing technology.
2. The precision thread processing process for metal materials according to claim 1, wherein: the cladding base material A in the step two comprises the following components in percentage: ni: 15.6-16.6% of Mg: 5.6-6.6%, Pb: 15.6-16.6%, Sn: 1.6-2.6% of Cu and inevitable trace impurities as the rest;
the preparation process of the cladding base material A comprises the following specific preparation steps:
s1: putting the raw materials of the cladding base material A into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend a;
s2: and (4) carrying out ultrasonic gas atomization treatment on the mixture a prepared in the step (S1) to obtain a cladding base material A.
3. The precision thread processing process for metal materials according to claim 2, wherein: the cladding base material B in the fourth step comprises the following components in percentage: al: 12.4-13.4%, Zn: 15.6-16.6%, Cr: 8.4-9.4%, Si: 5.6-6.6%, C: 0.1-0.3%, and the balance of Fe and inevitable trace impurities;
the preparation process of the cladding base material B comprises the following specific preparation steps:
(1): putting the raw materials of the cladding base material B into a steam kinetic energy mill according to the content ratio of each component for treatment to obtain a blend material B;
(2): carrying out smelting vacuum gas atomization treatment on the blend b prepared in the step (1) to obtain a cladding base material c;
(3): and (3) performing spark plasma sintering on the cladding base material c prepared in the step (2) to obtain a cladding base material B.
4. The precision thread processing process for metal materials according to claim 3, wherein: the cladding base material A comprises the following components in percentage: ni: 15.6%, Mg: 5.6%, Pb: 15.6%, Sn: 1.6 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 12.4%, Zn: 15.6%, Cr: 8.4%, Si: 5.6%, C: 0.1 percent, and the balance of Fe and inevitable trace impurities.
5. The precision thread processing process for metal materials according to claim 3, wherein: the cladding base material A comprises the following components in percentage: ni: 16.6%, Mg: 6.6%, Pb: 16.6%, Sn: 2.6 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 13.4%, Zn: 16.6%, Cr: 9.4%, Si: 6.6%, C: 0.3 percent, and the balance of Fe and inevitable trace impurities.
6. The precision thread processing process for metal materials according to claim 3, wherein: the cladding base material A comprises the following components in percentage: ni: 16.1%, Mg: 6.1%, Pb: 16.1%, Sn: 2.1 percent, and the balance of Cu and inevitable trace impurities; the cladding base material B comprises the following components in percentage: al: 12.9%, Zn: 16.1%, Cr: 8.9%, Si: 6.1%, C: 0.2 percent, and the balance of Fe and inevitable trace impurities.
7. The precision thread processing process for metal materials according to claim 3, wherein: in step S1, the steam consumption of the steam kinetic energy mill is 1800-2400 kg/h, the steam pressure is 15-25 bar, and the steam temperature is 310-330 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1450-1550 ℃, the flow rate of ultrasonic gas flow is Mach 2-2.5, the pulse frequency of the ultrasonic gas flow is 80-100 KHz, the pressure of the gas flow is 30-40 Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1800-2000 kg/h, the steam pressure is 20-24 bar, and the steam temperature is 310-330 ℃; in the step (2), the pressure in a vacuum state is 5-7 KPa, the airflow pressure is 6-8 Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 40-50 MPa, pulse direct current of 1700-1800A is introduced, and the heat preservation time is 3-5 min at 800-950 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
8. The precision thread processing process for metal materials according to claim 7, wherein: in step S1, the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 15bar, and the steam temperature is 310 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1450 ℃, the flow rate of ultrasonic gas flow is Mach 2, the pulse frequency of ultrasonic gas flow is 80KHz, the pressure of gas flow is 30Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1800kg/h, the steam pressure is 20bar, and the steam temperature is 310 ℃; in the step (2), the pressure in the vacuum state is 5KPa, the airflow pressure is 6Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 40MPa, 1700A pulse direct current is introduced, and the heat preservation time is 3min at 800 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
9. The precision thread processing process for metal materials according to claim 7, wherein: in step S1, the steam consumption of the steam kinetic energy mill is 2400kg/h, the steam pressure is 25bar, and the steam temperature is 330 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1550 ℃, the flow rate of ultrasonic gas flow is Mach 2.5, the pulse frequency of ultrasonic gas flow is 100KHz, the gas flow pressure is 40Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 2000kg/h, the steam pressure is 24bar, and the steam temperature is 330 ℃; in the step (2), the pressure in the vacuum state is 7KPa, the airflow pressure is 8Mpa, and the air source is nitrogen; when in spark plasma sintering, the pressure is 50MPa, 1800A pulse direct current is introduced, and the heat preservation time is 5min at 950 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
10. The precision thread processing process for metal materials according to claim 7, wherein: in step S1, the steam consumption of the steam kinetic energy mill is 2100kg/h, the steam pressure is 20bar, and the steam temperature is 320 ℃; in step S2, the tapping temperature of ultrasonic gas atomization is 1500 ℃, the flow rate of ultrasonic gas flow is Mach 2.25, the pulse frequency of ultrasonic gas flow is 90KHz, the pressure of gas flow is 35Mpa, and the gas source is nitrogen; in the step (1), the steam consumption of the steam kinetic energy mill is 1900kg/h, the steam pressure is 22bar, and the steam temperature is 320 ℃; in the step (2), the pressure in the vacuum state is 6KPa, the airflow pressure is 7Mpa, and the air source is nitrogen; when the discharge plasma sintering is carried out, the pressure is 45MPa, 1750A pulse direct current is introduced, and the heat preservation time is 4min at 875 ℃; and (4) releasing pressure and discharging to obtain cladding base material B.
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