CN109396757A - A kind of bullet-proof car shell and its production method - Google Patents
A kind of bullet-proof car shell and its production method Download PDFInfo
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- CN109396757A CN109396757A CN201811124649.9A CN201811124649A CN109396757A CN 109396757 A CN109396757 A CN 109396757A CN 201811124649 A CN201811124649 A CN 201811124649A CN 109396757 A CN109396757 A CN 109396757A
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- proof car
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- armour
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
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Abstract
The invention discloses a kind of bullet-proof car shell and its production methods, which comprises cuts armour according to bullet-proof car shell sizes；The armour after cutting is welded, wherein welding wire is identical as the armour ingredient, and preliminary bullet-proof car shell is made；The preliminary bullet-proof car shell is subjected to structural strengthening, is formed and reinforces bullet-proof car shell；The reinforcing bullet-proof car shell is integrally heat-treated, bullet-proof car shell finished product is obtained.The ballistic performance for solving welding line joint position in the prior art declines to a great extent, and punch-through occurs for test of practicing shooting, it is difficult to the technical issues of meeting bullet-proof car integral protection demand.Reach bullet-proof car welding line joint and meets the technical effect that whole ballistic performance requires so that bullet-proof car overall security greatly improves with the comparable protective performance of armour reaching after Overheating Treatment.
Description
Technical field
The present invention relates to bullet-proof car technical field more particularly to a kind of bullet-proof car shell and its production methods.
Background technique
With the increase of military industry field and police fields bullet-proof vehicle demand, high intensity levels armour is in bullet-proof car field
Start to be used widely.It is domestic and have related introduction in the world for armour production field, but about armour
Using technique, the ballistic performance of the armour joint location of bullet-proof car shell after welding is made not in particular with armour
It is described, this problem is also the insoluble bottleneck of the prior art of bullet-proof car production.This is mainly due to the welderings in steel plate
In termination process, due to being caused heating to influence by thermal weld stress, tissue and precipitation change weld dimensions, cause
The ballistic performance of welding line joint position declines to a great extent, and punch-through occurs for test of practicing shooting, it is difficult to meet the protection of bullet-proof car entirety
Demand.
Summary of the invention
The present invention provides a kind of bullet-proof car shell and its production methods, to solve welding line joint position in the prior art
Ballistic performance decline to a great extent, practice shooting test occur punch-through, it is difficult to the technical issues of meeting bullet-proof car integral protection demand.
In view of the above problems, in a first aspect, the present invention provides a kind of production method of bullet-proof car shell, the method packet
It includes: armour is cut according to bullet-proof car shell sizes；The armour after cutting is welded, wherein welding
It is identical as the armour ingredient with welding wire, preliminary bullet-proof car shell is made；The preliminary bullet-proof car shell is carried out structure to add
Bullet-proof car shell is reinforced Gu being formed；The reinforcing bullet-proof car shell is integrally heat-treated, bullet-proof car shell finished product is obtained.
Preferably, described that the preliminary bullet-proof car shell is subjected to structural strengthening, comprising: using thickness >=8mm steel plate
Strengthening steel slab is made；The strengthening steel slab is soldered on the preliminary bullet-proof car shell, the reinforcing bullet-proof car shell is obtained.
Preferably, the strengthening steel slab welds spacing≤20cm.
Preferably, described that the reinforcing bullet-proof car shell is integrally heat-treated, obtain bullet-proof car shell finished product, comprising:
By the reinforcing bullet-proof car shell at 850-950 DEG C of quenching temperature, 10-30min is kept the temperature；It is carried out after being quenched to room temperature low
Temperature tempering, tempering temperature are 150-350 DEG C, keep the temperature 20-60min；Being cooled down or come out of the stove with furnace, it is cooling to carry out air；To described
After reinforcing bullet-proof car shell is cooled to room temperature, the solder design point of the strengthening steel slab and the armour is cut and beaten
Mill；The strengthening steel slab is removed, the bullet-proof car shell finished product is obtained.
Preferably, the armour is C:0.20~0.45% using the chemical component of steel by weight percentage；Si:
0.20-0.80%；Mn:1.0~1.8%；Nb:0~0.06%；Mo:0.4~1.0%；V:0~0.10%；Ti:0~
0.08%；Al:0.01~0.06%；Ni:0~3.0%；Cu:0~1.0%；W:0~2.0%；P :≤0.011%；S :≤
0.004%；N :≤0.008%；Remaining is Fe and inevitable impurity.
Preferably, the intensity rank of the armour is 1500MPa-2000MPa.
Preferably, the armour after described pair of cutting be welded as using Laser Welding or argon arc welding mode.
Preferably, the hardening media is water quenching or oil quenching.Preferably, it is described by armour according to bullet-proof car shell sizes
It is cut, the cutting method is laser cutting or underwater plasma cutting.
Second aspect, the present invention provides a kind of bullet-proof car shell, the bullet-proof car shell is obtained using the method.
Said one or multiple technical solutions in the embodiment of the present invention at least have following one or more technology effects
Fruit:
1, in a kind of production method of bullet-proof car shell provided in an embodiment of the present invention, which comprises by armour
It is cut according to bullet-proof car shell sizes, reducing influences the thermal stress that armour generates, and avoids deforming；After cutting
The armour welded, wherein welding wire is identical as the armour ingredient, by using with the armour
Identical material is welded, can reach with the i.e. described comparable protective performance of armour of base material, to make to be made preliminary shellproof
Vehicle shell, with stable ballistic performance, and then solves in the prior art in steel plate i.e. armour in subsequent heat treatment
In welding process, due to being caused heating to influence by thermal weld stress, tissue and precipitation change weld dimensions, lead
The technical issues of causing the ballistic performance of welding line joint position to decline to a great extent；Then the preliminary bullet-proof car shell structure is carried out to add
Bullet-proof car shell is reinforced Gu being formed, avoids the bullet-proof car shell when lower step is heat-treated that quenching distortion occurs, to guarantee
The bullet-proof car outer cover quality；The reinforcing bullet-proof car shell is integrally heat-treated again, reaches welding line joint after heat treatment
To with the comparable ballistic performance of armour that uses, guarantee that the bullet-proof car shell performance reaches protection index, and solve remnants
Stress and the plasticity and toughness for improving material, so that acquisition bullet-proof car shell finished product overall security be made to greatly improve.And then it solves
The ballistic performance of welding line joint position declines to a great extent in the prior art, and punch-through occurs for test of practicing shooting, it is difficult to meet bullet-proof car
The technical issues of integral protection demand.Bullet-proof car welding line joint is reached and has reached comparable anti-with armour after Overheating Treatment
Performance is protected, so that bullet-proof car overall security greatly improves, meets the technical effect that whole ballistic performance requires.
2, it in a kind of bullet-proof car shell provided in an embodiment of the present invention, is processed by the production method of the bullet-proof car shell
It is made, first cuts armour according to bullet-proof car shell sizes, wherein taking laser cutting or underwater plasma cutting
Method, reducing influences the thermal stress that armour generates, and avoids deforming；Then the armour after cutting is adopted
Welded with welding wire identical with base material composition, welding laser welding or argon arc welding can be used, by using with it is described
The identical material of armour is welded, can reach with the i.e. described comparable protective performance of armour of base material, to make to be made just
Walk bullet-proof car shell in subsequent heat treatment with stable ballistic performance, and then solve in the prior art steel plate namely
In armour welding process, due to being caused heating to influence by thermal weld stress, tissue and precipitation occur weld dimensions
The technical issues of changing, the ballistic performance of welding line joint position caused to decline to a great extent；Then the preliminary bullet-proof car shell is made
Strengthening steel slab is made with thickness >=8mm steel plate and carries out structural strengthening, and reinforces spacing and is not more than 20cm, guarantees consolidation effect,
It is formed and reinforces bullet-proof car shell, avoid the bullet-proof car shell when lower step is heat-treated that quenching distortion occurs, to guarantee institute
State bullet-proof car outer cover quality；The reinforcing bullet-proof car shell is integrally heat-treated again, the heat treatment is quenched using immersion
The reinforcing bullet-proof car shell is kept the temperature 10-30 minutes at 850-950 DEG C of heating temperature by mode, and heat treatment procedure is to guarantee
Bullet-proof car shell performance reaches the important step of protection index, and Quench heating and heat preservation are according to chemical component system used and alloy
Additive amount selects 850-950 DEG C, guarantees abundant austenitizing and controls austenite grain size, soaking time is selected according to thickness
10-30 minutes, lonneal is then carried out after being quenched to room temperature, tempering temperature is to keep the temperature 20-60 minutes at 150-350 DEG C,
Soaking time can be appropriately extended in tempering, discharge residual stress, and subsequent bullet-proof car shell is avoided to crack due to stress concentration.It connects
Cooled down, select furnace cooling or come out of the stove that air is followed to carry out air-cooled.It is finally cooling to the reinforcing bullet-proof car shell
To room temperature, the solder design point of the strengthening steel slab and the armour is cut and polished, the reinforcing steel is removed
Plate finally obtains the bullet-proof car shell finished product.The bullet-proof car has welding line joint and the armour that uses comparable shellproof
Performance guarantees that the bullet-proof car shell performance reaches protection index, and solves residual stress and improve the plasticity and toughness of material, thus
Greatly improve acquisition bullet-proof car shell finished product overall security.And then solve the shellproof of welding line joint position in the prior art
Performance declines to a great extent, and punch-through occurs for test of practicing shooting, it is difficult to the technical issues of meeting bullet-proof car integral protection demand.Reach
Bullet-proof car welding line joint and the comparable protective performance of armour meet whole anti-so that bullet-proof car overall security greatly improves
Play the technical effect of performance requirement.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the production method of bullet-proof car shell of the embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of bullet-proof car shell and its production methods, solve welding line joint in the prior art
The ballistic performance of position declines to a great extent, and punch-through occurs for test of practicing shooting, it is difficult to meet the technology of bullet-proof car integral protection demand
Problem.
Technical method in the embodiment of the present invention, general thought are as follows:
Armour is cut according to bullet-proof car shell sizes；The armour after cutting is welded, wherein
Welding wire is identical as the armour ingredient, and preliminary bullet-proof car shell is made；The preliminary bullet-proof car shell is tied
Structure is reinforced, and is formed and is reinforced bullet-proof car shell；The reinforcing bullet-proof car shell is integrally heat-treated, obtain bullet-proof car shell at
Product.Reached bullet-proof car welding line joint reach after Overheating Treatment with the comparable protective performance of armour so that bullet-proof car is whole
Body safety greatly improves, and meets the technical effect that whole ballistic performance requires.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of flow diagram of the production method of bullet-proof car shell in the embodiment of the present invention.As shown in Figure 1, institute
The method of stating includes:
Step 10: armour is cut according to bullet-proof car shell sizes；
Further, described to cut armour according to bullet-proof car shell sizes, the cutting method is cut for laser
It cuts or underwater plasma cutting.
Specifically, outside plate used in the bullet-proof car of ballistic requirements will be met using laser cutting or underwater plasma cutting
Mode carries out cutting stock, and outside plate, that is, armour used in the bullet-proof car is cut into accordingly greatly according to the size of the bullet-proof car
Small armour, the laser cutting or underwater plasma cutting mode have the characteristics that cutting heat is lesser, can subtract as far as possible
Few thermal stress generated on the armour influences, so that the armour after cutting stock be avoided to deform.It should be understood that this hair
Thermal stress described in bright embodiment refers to that, when temperature changes, object is due to mutual between external restraint and internal each section
Constraint, the stress for generating it from complete free to contract and expand, also known as temperature changing stress.
Step 20: the armour after cutting is welded, wherein welding wire and the armour are at split-phase
Together, preliminary bullet-proof car shell is made；
Further, the armour after described pair of cutting be welded as using Laser Welding or argon arc welding mode.
Specifically, being formed successively being welded in step 10 according to the armour of the bullet-proof car size well cutting
Bullet-proof car shell shape obtains the preliminary bullet-proof car shell, wherein selecting Laser Welding or argon arc when welding to the armour
Welding, it should be understood that Laser Welding described in the embodiment of the present invention is a kind of laser beam using focusing as produced by energy bombardment weldment
The method welded of heat, that there are also heat inputs is low for Laser Welding, and welding deformation is small, not by electromagnetic field effects the features such as；It is described
Argon arc welding is to use argon gas as a kind of welding technique of protective gas, also known as argon gas protection weldering, is exactly the week in arc welding
Enclosing logical upper argon gas protective gas prevents the oxidation of welding zone by air insulated except welding zone.In addition argon arc welding mode is being used
When carrying out welding forming to the armour, the welding wire used should be material system identical with the chemical component of the armour
At, using it is identical as base material can achieve in subsequent heat treatment with the comparable protective performance of base material, while use argon arc welding side
Formula welding has more flexible, easy-operating feature, should choose in the selection of argon arc welding wire identical with base material chemical component
Material, to guarantee that the properties after welding point heat treatment are up to standard.In the mode using laser welding to the armour
When carrying out welding forming, since Laser Welding does not need welding wire, the ingredient and base material of connected with welding position are suitable, in subsequent thermal
Position while welding after heat treatment procedure identical with base material, can achieve and the comparable protective of base material in treatment process
Energy.To solve in the prior art in steel plate i.e. armour welding process, weld dimensions are due to being welded
Connecing heat input causes heating to influence, and tissue and precipitation change, and the ballistic performance of welding line joint position is caused to decline to a great extent
Technical problem.
Step 30: the preliminary bullet-proof car shell being subjected to structural strengthening, is formed and reinforces bullet-proof car shell；
Further, described that the preliminary bullet-proof car shell is subjected to structural strengthening, comprising: using thickness >=8mm steel
Strengthening steel slab is made in plate；The strengthening steel slab is soldered on the preliminary bullet-proof car shell, is obtained outside the reinforcing bullet-proof car
Shell.
Further, the strengthening steel slab welds spacing≤20cm.
Specifically, in the bullet-proof car outside plate, that is, armour after step 30 welding forming, to described preliminary shellproof
Vehicle shell carries out structural strengthening, prevents from deforming in the subsequent process, selects the thick steel plate side of being welded into a thickness of 8mm or more
The strengthening steel slab of lattice or other shapes, then the strengthening steel slab made is welded on the preliminary bullet-proof car shell,
For the consolidation effect for guaranteeing the strengthening steel slab, the strengthening steel slab should be reinforced the preliminary bullet-proof car shell spacing not
Greater than 20cm, to guarantee consolidation effect, the bullet-proof car in subsequent thermal processing is avoided to deform, due to using in process below
Heat treatment be immersion quench mode, the part size the big more is easy to happen quenching distortion, and wave is easy to appear after water cooling, is stuck up
The flatness defects such as song, therefore need the preliminary bullet-proof car shell good to welding to carry out firm structural strengthening before quenching,
It prevents that the deformation of bullet-proof car outside plate occurs in follow-up heat treatment process.
Step 40: the reinforcing bullet-proof car shell being integrally heat-treated, bullet-proof car shell finished product is obtained.
Further, described that the reinforcing bullet-proof car shell is integrally heat-treated, obtain bullet-proof car shell finished product, packet
It includes: by the reinforcing bullet-proof car shell at 850-950 DEG C of quenching temperature, keeping the temperature 10-30min；It is laggard when being quenched to room temperature
Row lonneal, tempering temperature are 150-350 DEG C, keep the temperature 20-60min；Being cooled down or come out of the stove with furnace, it is cooling to carry out air；To
After the reinforcing bullet-proof car shell is cooled to room temperature, the solder design point of the strengthening steel slab and the armour is cut
And polishing；The strengthening steel slab is removed, the bullet-proof car shell finished product is obtained.
Further, the hardening media is water quenching or oil quenching.
Specifically, bulk heat treatmet will be done by the reinforcing bullet-proof car shell that structural strengthening is formed, at the heat
The immersion that reason uses quenches mode, and the reinforcing bullet-proof car shell is kept the temperature 10-30 at 850-950 DEG C of heating temperature first
Minute, heat treatment procedure is to guarantee that bullet-proof car shell performance reaches the important step of protection index, Quench heating and heat preservation basis
Chemical component system used and alloy addition level select 850-950 DEG C, guarantee abundant austenitizing and control austenite grain ruler
Very little, soaking time selects 10-30 minute according to thickness, used in hardening media be water quenching or oil quenching, the oil quenching is
Use oil as quenching medium, when being heated to a certain temperature of transformation temperature or more, heat preservation appropriate time, chilling in the oil therewith；The water
Quench to be quenched using water as quenching medium, advantage be it is cooling very fast in high-temperature region, for carbon content compared with the strong steel grade of high-hardenability,
It should select oil quenching, integrally-built residual stress and be conducive to control panel shape after selecting oil hardening to can reduce quenching.Then when
Lonneal is carried out after being quenched to room temperature, tempering temperature is to keep the temperature 20-60 minutes at 150-350 DEG C, and guarantor can be appropriately extended in tempering
The warm time discharges residual stress, and subsequent bullet-proof car shell is avoided to crack due to stress concentration.It is then cooled off, selects
It is air-cooled that furnace cooling or come out of the stove follows air to carry out.Finally after the reinforcing bullet-proof car shell is cooled to room temperature, to described
The solder design of strengthening steel slab and armour point is cut and is polished, and the strengthening steel slab is removed, described in final acquisition
Bullet-proof car shell finished product.The bullet-proof car shell finished product, which is obtained, by each step of the embodiment of the present invention reaches bullet-proof car shell entirety
Ballistic performance requirement, suitable for the manufacture of various bullet-proof car shells, be suitable for 1-2 grade of 4569 ballistic standard of NATO protect and other
The protection of Europe superscript, American Standard and national military standard armour appropriate level efficiently solves the strong armour of superelevation in manufacture bullet-proof car process
In the position while welding ballistic performance as caused by welding weaken the technical issues of, reached welding line joint and reached after Overheating Treatment
To the comparable protective performance of base material armour, so that bullet-proof car overall security greatly improves, by using structural strengthening, avoid
Deformation in heat treatment process, and residual stress is solved by long-time lonneal and improves the technology effect of the plasticity and toughness of material
Fruit.
Further, the armour is C:0.20~0.45% using the chemical component of steel by weight percentage；Si:
0.20-0.80%；Mn:1.0~1.8%；Nb:0~0.06%；Mo:0.4~1.0%；V:0~0.10%；Ti:0~
0.08%；Al:0.01~0.06%；Ni:0~3.0%；Cu:0~1.0%；W:0~2.0%；P :≤0.010%；S :≤
0.004%；N :≤0.008%；Remaining is Fe and inevitable impurity.
Further, the intensity rank of the armour is 1500MPa-2000MPa.
Specifically, the armour intensity rank used in the embodiment of the present invention is 1500MPa-2000MPa, meet
Bullet-proof car ballistic performance requirement, while the armour using the chemical component of steel be by weight percentage C:0.20~
0.45%；Si:0.20-0.80%；Mn:1.0~1.8%；Nb:0~0.06%；Mo:0.4~1.0%；V:0~0.10%；
Ti:0~0.08%；Al:0.01~0.06%；Ni:0~3.0%；Cu:0~1.0%；W:0~2.0%；P :≤0.011%；
S :≤0.004%；N :≤0.008%；Remaining is Fe and inevitable impurity.Wherein in step 20 to the described anti-of well cutting
When diving board is welded, the welding wire using argon arc welding should be that the identical material of the armour chemical component is made,
Meet the production needs of the bullet-proof car shell of bullet-proof car integral protection performance by the armour high intensity levels.Embodiment two
A kind of bullet-proof car shell provided in an embodiment of the present invention, the bullet-proof car shell through the foregoing embodiment one it is described
Method is processed into.
Firstly, armour is cut according to bullet-proof car shell sizes, wherein taking laser cutting or underwater plasma
Cutting method, reducing influences the thermal stress that armour generates, and avoids deforming；Then, to the armour after cutting
Welding wire identical with base material composition is used to be welded, laser welding or argon arc welding can be used in welding, by using
Material identical as the armour is welded, can reach with the i.e. described comparable protective performance of armour of base material, to make
Preliminary bullet-proof car shell is made in subsequent heat treatment with stable ballistic performance, and then solves in the prior art in steel plate
Namely in armour welding process, weld dimensions by thermal weld stress due to being caused heating to influence, tissue and analysis
The technical issues of changing out, the ballistic performance of welding line joint position caused to decline to a great extent；Then, by the preliminary bullet-proof car
Shell is made strengthening steel slab using thickness >=8mm steel plate and carries out structural strengthening, and reinforces spacing and be not more than 20cm, guarantees to reinforce
Effect forms and reinforces bullet-proof car shell, avoids the bullet-proof car shell when lower step is heat-treated that quenching distortion occurs, to protect
Demonstrate,prove the bullet-proof car outer cover quality；Then be integrally heat-treated to the reinforcing bullet-proof car shell again: the heat treatment is using leaching
Enter formula quenching mode, the reinforcing bullet-proof car shell is kept the temperature 10-30 minutes at 850-950 DEG C of heating temperature, is heat-treated work
Sequence is to guarantee that bullet-proof car shell performance reaches the important step of protection index, and Quench heating and heat preservation are according to chemical component body used
System and alloy addition level select 850-950 DEG C, guarantee abundant austenitizing and control austenite grain size, soaking time according to
Thickness selects 10-30 minute, used in hardening media be water quenching or oil quenching, the oil quenching be use it is oily as quenching medium,
When being heated to a certain temperature of transformation temperature or more, appropriate time is kept the temperature, therewith chilling in the oil；The water quenching is using water as quenching
Agent is quenched, and advantage is cooled down comparatively fast in high-temperature region, and for carbon content compared with the strong steel grade of high-hardenability, Ying Xuanyong oil quenching is selected
Oil hardening integrally-built residual stress and is conducive to control panel shape after can reduce quenching.Then it is carried out after being quenched to room temperature
Lonneal, tempering temperature are to keep the temperature 20-60 minutes at 150-350 DEG C, and soaking time can be appropriately extended in tempering, and release remnants are answered
Power avoids subsequent bullet-proof car shell from cracking due to stress concentration.Be then cooled off, select furnace cooling or come out of the stove with
It is carried out with air air-cooled.Finally, after the reinforcing bullet-proof car shell is cooled to room temperature, to the strengthening steel slab and described shellproof
The solder design point of plate is cut and is polished, and the strengthening steel slab is removed, and finally obtains the bullet-proof car shell finished product.
The comparable ballistic performance of armour that bullet-proof car described in the embodiment of the present invention has welding line joint and uses guarantees institute
It states bullet-proof car shell performance and reaches protection index, the overall security prior art, which has, to be greatly improved.And then solves existing skill
The ballistic performance of welding line joint position declines to a great extent in art, and punch-through occurs for test of practicing shooting, it is difficult to meet bullet-proof car and integrally prevent
The technical issues of shield demand.Reach bullet-proof car welding line joint reaching after Overheating Treatment and the comparable protective of armour
Can, so that bullet-proof car overall security greatly improves, meet the technical effect that whole ballistic performance requires.
Embodiment three
For the clearer elaboration present invention, below by the embodiment of the present invention to a kind of bullet-proof car shell of the invention
The actual production process of production method and the test result of shellproof overall performance are described in detail.
The armour chemical component that bullet-proof car shell described in the embodiment of the present invention uses is by weight percentage are as follows: C:
0.20~0.45%；Si:0.20-0.80%；Mn:1.0~1.8%；Nb:0~0.06%；Mo:0.4~1.0%；V:0~
0.10%；Ti:0~0.08%；Al:0.01~0.06%；Ni:0~3.0%；Cu:0~1.0%；W:0~2.0%；P :≤
0.011%；S :≤0.004%；N :≤0.008%；Remaining is Fe and inevitable impurity.
Meet the strong armour of superelevation that above-mentioned armour chemical component requires using selection in the embodiment of the present invention to be had
Body production, the armour chemical component situation by weight percentage of use see the table below 1.
Table 1
As a kind of optional embodiment, each ingredient is introduced separately below:
C
Most economical one of intensified element in steel guarantees the intensity of material by the control of C content, and solution strengthening improves
Yield strength.
The degree of C content about the present embodiment may include the degree of following ingredient, and this implementation
The C content enumerated in example is only illustrated, and does not do other limitations.
The degree of C content may include following range: 0.20~0.33%, 0.20~0.38%, 0.20~
0.42%, 0.20~0.45%；0.22~0.33%, 0.22~0.38%, 0.22~0.42%, 0.22~0.45%；0.33
~0.38%, 0.33~0.42%, 0.33~0.45%；0.38~0.42%, 0.38~0.45%；0.42~0.45%.
Si
For deoxidant element, the solution strengthening in steel guarantees the intensity of steel.
The degree of Si content about the present embodiment may include the degree of following ingredient, and this reality
It applies the Si content enumerated in example only to illustrate, does not do other limitations.
The degree of Si content may include following range: 0.20~0.31%, 0.20~0.34%, 0.20~
0.50%, 0.20~0.60%, 0.20~0.80%；0.31~0.34%, 0.31~0.50%, 0.31~0.60%, 0.31
~0.80%；0.33~0.50%, 0.33~0.60%, 0.33~0.80%；0.34~0.50%, 0.34~0.60%,
0.34~0.80%；0.50~0.60%, 0.50~0.80%；0.60~0.80%.Mn solution strengthening element improves surrender
Intensity guarantees obdurability.
The degree of Mn content about the present embodiment may include the degree of following ingredient, and this reality
It applies the Mn content enumerated in example only to illustrate, does not do other limitations.
The degree of Mn content may include following range: 1.0~1.1%, 1.0~1.26%, 1.0~1.3%,
1.0~1.45%, 1.0~1.80%；1.1~1.26%, 1.1~1.3%, 1.1~1.45%, 1.1~1.80%；1.26~
1.3%, 1.26~1.45%, 1.26~1.80%；1.3~1.45%, 1.3~1.8%；1.45~1.80%.
P
Impurity element in steel, the excessively high weldability that can make steel, formability are reduced, are controlled within 0.011%.
The degree of P content about the present embodiment may include the degree of following ingredient, and this implementation
The P content enumerated in example is only illustrated, and does not do other limitations.
The degree of P content may include following range: 0~0.008%, 0~0.009%, 0~0.010%, 0
~0.011%%；0.008~0.009%, 0.008~0.010%, 0.008~0.011%；0.009~0.010%, 0.009
~0.011%；0.010~0.011%.
S
Impurity element in steel influences the low-temperature flexibility of steel, controls within 0.004%.
The degree of S content about the present embodiment may include the degree of following ingredient, and this implementation
The S content enumerated in example is only illustrated, and does not do other limitations.
The degree of S content may include following range: 0~0.001%, 0~0.002%, 0~0.004%；
0.001~0.002%, 0.001~0.004%；0.002~0.004%.
N
The N of solid solution can improve intensity, the plasticity and toughness of too high levels meeting severe exacerbation material, especially for heat treatment
High-strength steel should control≤0.008%.
The degree of N content about the present embodiment may include the degree of following ingredient, and this implementation
The N content enumerated in example is only illustrated, and does not do other limitations.
The degree of N content may include following range: 0~0.003%, 0~0.004%, 0~0.008%；
0.003~0.004%, 0.003~0.008%；0.004~0.008%.
Ti
Fixed nitrogen reduces the N to dissociate in steel by forming TiN, improves materials'use performance, extra Ti is played in conjunction with C
Precipitation strength effect, the precipitation strength of TiC can cause damages to the low-temperature impact toughness of material, therefore need upper control limit, control 0
~0.08%.
The degree of Ti content about the present embodiment may include the degree of following ingredient, and this reality
It applies the Ti content enumerated in example only to illustrate, does not do other limitations.
The degree of Ti content may include following range: 0~0.025%, 0~0.027%, 0~0.030%, 0
~0.08%；0.025~0.027%, 0.025~0.030%, 0.025~0.08%；0.027~0.030%, 0.027~
0.08%；0.030~0.08%.
Nb
Second phase formation element plays precipitation strength effect, has and inhibits the recovery of austenite in hot-rolled process, ties again
Brilliant crystal grain-growth, to make ferritic phase become the effect of desired partial size, second phase particles belong to hard phase, can increase base
The wearability of body.
The degree of Nb content about the present embodiment may include the degree of following ingredient, and this reality
It applies the Nb content enumerated in example only to illustrate, does not do other limitations.
The degree of Nb content may include following range: 0~0.030%, 0~0.035%, 0~0.038%, 0
~0.06%；0.030~0.035%, 0.030~0.038%, 0.030~0.06%；0.035~0.038%, 0.035~
0.06%；0.038~0.06%.
V
Second phase formation element plays precipitation strength effect, and it is strong that a certain amount of V improves the incomplete annealed zone of welding
Degree.
The degree of V content about the present embodiment may include the degree of following ingredient, and this implementation
The V content enumerated in example is only illustrated, and does not do other limitations.
The degree of V content may include following range: 0~0.05%, 0~0.07%, 0~0.08%, 0~
0.1%；0.05~0.07%, 0.05~0.08%, 0.05~0.1%；0.07~0.08%, 0.07~0.1%；0.08~
0.1%.
Cu
Compound addition is strengthened, and the integral strength of material is improved.
The degree of Cu content about the present embodiment may include the degree of following ingredient, and this reality
It applies the Cu content enumerated in example only to illustrate, does not do other limitations.
The degree of Cu content may include following range: 0~0.25%, 0~0.5%, 0~0.6%, 0~
1.0%；0.25~0.5%, 0.25~0.6%, 0.25~1.0%；0.5~0.6%, 0.5~1.0%；0.6~1.0%.
W
The intensity, heat resistance and temper resistance of armour can be improved, the crystal grain of steel is grown up when reducing quenching, improves weldering
Connect joint performance.
The degree of W content about the present embodiment may include the degree of following ingredient, and this implementation
The W content enumerated in example is only illustrated, and does not do other limitations.
The degree of W content may include following range: 0~0.5%, 0~0.9%, 0~1.1%, 0~
2.0%；0.5~0.9%, 0.5~1.1%, 0.5~2.0%；0.9~1.1%, 0.9~2.0%；1.1~2.0%.
Mo
Material harden ability is improved, control heat treatment cools tissue refines crystal grain, improves material plasticity and intensity.
The degree of Mo content about the present embodiment may include the degree of following ingredient, and this reality
It applies the Mo content enumerated in example only to illustrate, does not do other limitations.
The degree of Mo content may include following range: 0.4~0.5%, 0.4~0.65%, 0.4~0.8%,
0.4~1.0%；0.5~0.65%, 0.5~0.8%, 0.5~1.0%；0.65~0.8%, 0.65~1.0%；0.8~
1.0%.
Ni
Compound addition is strengthened, and intensity is improved, and improves the ballistic performance of material and improves property of welded joint.
The degree of Ni content about the present embodiment may include the degree of following ingredient, and this reality
It applies the Ni content enumerated in example only to illustrate, does not do other limitations.
The degree of Ni content may include following range: 0~0.6%, 0~0.8%, 0~1.0%, 0~
3.0%；0.6~0.8%, 0.6~1.0%, 0.6~3.0%；0.8~1.0%, 0.8~3.0%；1.0~3.0%.
As can be seen from the above description, the range of the degree of each ingredient in the present embodiment at least can be above-mentioned model
Any combination enclosed, and the range of the above-mentioned degree in present invention implementation, other than enumerating, other are unlisted out
But be included in the range of the degree of the embodiment of the present invention, it should also belong to the embodiment of the present invention protection scope it
It is interior.
The embodiment of the present invention produce bullet-proof car shell the following steps are included:
Firstly, the cutting stock mode of outside plate used in bullet-proof car avoids cutting using laser cutting or underwater plasma cutting
Rear steel plate is cut to deform.
Then, the armour after cutting stock is shaped using Laser Welding or argon arc welding mode butt welding, wherein 1 chemistry of table
No. 1 No. 2 No. 3 armours of ingredient dock forming using Laser Welding, and No. 4 and No. 5 armours use argon arc welding docking forming, welding wire
It is made of chemical backbone material identical as armour.
Then, structural strengthening being carried out to bullet-proof car shell, prevents quenching distortion, reinforcement material used is 10mm thick steel plate,
Material is low-alloy steel, be welded into it is vertical and horizontal intersect groined type reinforcing member, reinforcing member steel distance between plates 10-15cm, and by reinforcing member
It is spot welded on bullet-proof car shell.
Finally, being welded into shape and carrying out bulk heat treatmet after reinforcing, heat treatment adds lonneal technique using immersion quenching,
850-950 DEG C of quenching temperature, soaking time 10-30 minutes, hardening media used water quenching or oil quenching, after being quenched to room temperature
Lonneal is carried out, 150-350 DEG C of tempering temperature, soaking time 20-60 minutes, furnace cooling or is come out of the stove air-cooled.No. 1-5 is returned
The solder design point of integrally-built reinforcing member and armour after fire is cut and is polished, and can be obtained after removing structural reinforcement
To bullet-proof car shell finished product.
Wherein the specific production technology of No. 1-5 heat treatment is shown in Table 2:
Table 2
Target practice test, specific shooting scheme and result are carried out to using the bullet-proof car shell made of 1-5 armour
It see the table below 3:
Table 3
It is tested by practicing shooting, bullet-proof car shell entirety ballistic performance obtained is qualified, provided in an embodiment of the present invention
Bullet-proof car shell production method efficiently solves the strong armour of superelevation weld seam as caused by welding during manufacturing bullet-proof car
Position ballistic performance weakens problem, and welding line joint is reaching the comparable ballistic performance of base material armour after Overheating Treatment, practices shooting
Test result is good, so that bullet-proof car overall security greatly improves.By using structural strengthening, avoid in heat treatment process
Deformation, and residual stress is solved by long-time lonneal and improves the plasticity and toughness of material.Work provided in an embodiment of the present invention
Skill be suitable for various bullet-proof car shells manufacture, be suitable for 1-2 grade of 4569 ballistic standard of NATO protect and other Europe superscripts, American Standard and
The protection of national military standard armour appropriate level.
The technical solution provided in the embodiment of the present application, has at least the following technical effects or advantages:
1, in a kind of production method of bullet-proof car shell provided in an embodiment of the present invention, which comprises by armour
It is cut according to bullet-proof car shell sizes, reducing influences the thermal stress that armour generates, and avoids deforming；After cutting
The armour welded, wherein welding wire is identical as the armour ingredient, by using with the armour
Identical material is welded, can reach with the i.e. described comparable protective performance of armour of base material, to make to be made preliminary shellproof
Vehicle shell, with stable ballistic performance, and then solves in the prior art in steel plate i.e. armour in subsequent heat treatment
In welding process, due to being caused heating to influence by thermal weld stress, tissue and precipitation change weld dimensions, lead
The technical issues of causing the ballistic performance of welding line joint position to decline to a great extent；；Then the preliminary bullet-proof car shell is subjected to structure
It reinforces, is formed and reinforce bullet-proof car shell, avoid the bullet-proof car shell when lower step is heat-treated that quenching distortion occurs, to protect
Demonstrate,prove the bullet-proof car outer cover quality；The reinforcing bullet-proof car shell is integrally heat-treated again, makes welding line joint after heat treatment
The comparable ballistic performance of armour for reaching and using guarantees that the bullet-proof car shell performance reaches protection index, and solves residual
Residue stress and the plasticity and toughness for improving material, so that acquisition bullet-proof car shell finished product overall security be made to greatly improve.And then it solves
The ballistic performance of welding line joint position declines to a great extent in the prior art, and punch-through occurs for test of practicing shooting, it is difficult to meet shellproof
The technical issues of vehicle integral protection demand.Bullet-proof car welding line joint is reached and has reached comparable with armour after Overheating Treatment
Protective performance meets the technical effect that whole ballistic performance requires so that bullet-proof car overall security greatly improves.
2, it in a kind of bullet-proof car shell provided in an embodiment of the present invention, is processed by the production method of the bullet-proof car shell
It is made, first cuts armour according to bullet-proof car shell sizes, wherein taking laser cutting or underwater plasma cutting
Method, reducing influences the thermal stress that armour generates, and avoids deforming；Then the armour after cutting is adopted
Welded with welding wire identical with base material composition, welding laser welding or argon arc welding can be used, by using with it is described
The identical material of armour is welded, can reach with the i.e. described comparable protective performance of armour of base material, to make to be made just
Walk bullet-proof car shell in subsequent heat treatment with stable ballistic performance, and then solve in the prior art steel plate namely
In armour welding process, due to being caused heating to influence by thermal weld stress, tissue and precipitation occur weld dimensions
The technical issues of changing, the ballistic performance of welding line joint position caused to decline to a great extent；Then the preliminary bullet-proof car shell is made
Strengthening steel slab is made with thickness >=8mm steel plate and carries out structural strengthening, and reinforces spacing and is not more than 20cm, guarantees consolidation effect,
It is formed and reinforces bullet-proof car shell, avoid the bullet-proof car shell when lower step is heat-treated that quenching distortion occurs, to guarantee institute
State bullet-proof car outer cover quality；The reinforcing bullet-proof car shell is integrally heat-treated again, the heat treatment is quenched using immersion
The reinforcing bullet-proof car shell is kept the temperature 10-30 minutes at 850-950 DEG C of heating temperature by mode, and heat treatment procedure is to guarantee
Bullet-proof car shell performance reaches the important step of protection index, and Quench heating and heat preservation are according to chemical component system used and alloy
Additive amount selects 850-950 DEG C, guarantees abundant austenitizing and controls austenite grain size, soaking time is selected according to thickness
10-30 minutes, lonneal is then carried out after being quenched to room temperature, tempering temperature is to keep the temperature 20-60 minutes at 150-350 DEG C,
Soaking time can be appropriately extended in tempering, discharge residual stress, and subsequent bullet-proof car shell is avoided to crack due to stress concentration.It connects
Cooled down, select furnace cooling or come out of the stove that air is followed to carry out air-cooled.It is finally cooling to the reinforcing bullet-proof car shell
To room temperature, the solder design point of the strengthening steel slab and the armour is cut and polished, the reinforcing steel is removed
Plate finally obtains the bullet-proof car shell finished product.The bullet-proof car has welding line joint and the armour that uses comparable shellproof
Performance guarantees that the bullet-proof car shell performance reaches protection index, and solves residual stress and improve the plasticity and toughness of material, thus
Greatly improve acquisition bullet-proof car shell finished product overall security.And then solve the shellproof of welding line joint position in the prior art
Performance declines to a great extent, and punch-through occurs for test of practicing shooting, it is difficult to the technical issues of meeting bullet-proof car integral protection demand.Reach
Bullet-proof car welding line joint and the comparable protective performance of armour meet whole anti-so that bullet-proof car overall security greatly improves
Play the technical effect of performance requirement.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of production method of bullet-proof car shell, which is characterized in that the described method includes:
Armour is cut according to bullet-proof car shell sizes；
The armour after cutting is welded, wherein welding wire is identical as the armour ingredient, is made preliminary
Bullet-proof car shell；
The preliminary bullet-proof car shell is subjected to structural strengthening, is formed and reinforces bullet-proof car shell；
The reinforcing bullet-proof car shell is integrally heat-treated, bullet-proof car shell finished product is obtained.
2. the method as described in claim 1, which is characterized in that it is described that the preliminary bullet-proof car shell is subjected to structural strengthening,
Include:
Strengthening steel slab is made using thickness >=8mm steel plate；
The strengthening steel slab is soldered on the preliminary bullet-proof car shell, the reinforcing bullet-proof car shell is obtained.
3. method according to claim 2, which is characterized in that the strengthening steel slab welds spacing≤20cm.
4. method as claimed in claim 3, which is characterized in that it is described that the reinforcing bullet-proof car shell is integrally heat-treated,
Obtain bullet-proof car shell finished product, comprising:
By the reinforcing bullet-proof car shell at 850-950 DEG C of quenching temperature, 10-30min is kept the temperature；
Lonneal is carried out after being quenched to room temperature, tempering temperature is 150-350 DEG C, keeps the temperature 20-60min；
Being cooled down or come out of the stove with furnace, it is cooling to carry out air；
After the reinforcing bullet-proof car shell is cooled to room temperature, the solder design of the strengthening steel slab and the armour is clicked through
Row cutting and polishing；
The strengthening steel slab is removed, the bullet-proof car shell finished product is obtained.
5. the method as described in claim 1, which is characterized in that the armour uses the chemical component of steel by weight percentage
For C:0.20~0.45%；Si:0.20-0.80%；Mn:1.0~1.8%；Nb:0~0.06%；Mo:0.4~1.0%；V:0
~0.10%；Ti:0~0.08%；Al:0.01~0.06%；Ni:0~3.0%；Cu:0~1.0%；W:0~2.0%；P :≤
0.011%；S :≤0.004%；N :≤0.008%；Remaining is Fe and inevitable impurity.
6. method as claimed in claim 5, which is characterized in that the intensity rank of the armour is 1500MPa-2000MPa.
7. the method as described in claim 1, which is characterized in that the armour after described pair of cutting carries out being welded as using
Laser Welding or argon arc welding mode.
8. method as claimed in claim 4, which is characterized in that the hardening media is water quenching or oil quenching.
9. the method as described in claim 1, which is characterized in that described to cut armour according to bullet-proof car shell sizes
It cuts, the cutting method is laser cutting or underwater plasma cutting.
10. a kind of bullet-proof car shell, which is characterized in that the bullet-proof car shell uses any claim institute of the claims 1-9
The method stated obtains.
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| US20130139958A1 (en) * | 2009-07-17 | 2013-06-06 | Gentex Corporation | Method of Making a Composite Sheet |
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