{"id":14477,"date":"2017-11-08T16:24:36","date_gmt":"2017-11-08T15:24:36","guid":{"rendered":"https:\/\/sonats-et.com\/grenaillage\/grenaillage-de-precontrainte-shot-peening\/"},"modified":"2024-12-23T16:51:04","modified_gmt":"2024-12-23T15:51:04","slug":"what-is-shot-peening","status":"publish","type":"page","link":"https:\/\/sonats-et.com\/en\/shot-peening\/what-is-shot-peening\/","title":{"rendered":"What is shot peening ?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_row_inner equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221;][vc_column_inner width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<h2>What is shot peening &#8211; ultrasonic shot peening ?<\/h2>\n<p>Our shot peening process is used to improve:<\/p>\n<ul>\n<li>Fatigue resistance<\/li>\n<li>Resistance to stress corrosion cracking and contact fatigue<\/li>\n<\/ul>\n<p>This surface impact treatment solution consists in bombarding the specific area to be peened with small projectiles (= media). This action <strong>induces residual compressive stress on the surface, which delays the appearance of cracks, and improves the lifetime of the part<\/strong>. This is a cold working and work hardening process.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=&#8221;1\/3&#8243; css=&#8221;.vc_custom_1542103861418{background-color: #ffffff !important;}&#8221;]<div class=\"ult-content-box-container downloadform\" >\t<a class=\"ult-content-box-anchor\" href=\"http:\/\/sonats-et.com\/en\/downloads\/\" title=\"Download our brochure dedicated to portative Ultrasonic Shot Peening\" >\t\t<div class=\"ult-content-box\" style=\"background-color:rgba(0,157,224,0.15);box-shadow: px px px px none;padding:15px;margin-top:5px;margin-right:15px;margin-bottom:5px;margin-left:15px;-webkit-transition: all 700ms ease;-moz-transition: all 700ms ease;-ms-transition: all 700ms ease;-o-transition: all 700ms ease;transition: all 700ms ease;\"  data-hover_bg_color=\"rgba(205,91,27,0.15)\"  data-hover_box_shadow=\"none\"    data-normal_margins=\"margin-top:5px;margin-right:15px;margin-bottom:5px;margin-left:15px;\"   data-bg=\"rgba(0,157,224,0.15)\" >[vc_single_image image=&#8221;18476&#8243; img_size=&#8221;full&#8221; alignment=&#8221;center&#8221;][vc_column_text]<\/p>\n<p style=\"text-align: center;\"><span style=\"color: #2f3787;\"><strong>Download our dedicated brochure on portative Ultrasonic Shot Peening\u00a0<\/strong><\/span><\/p>\n<p>[\/vc_column_text][vc_btn title=&#8221;Download&#8221; style=&#8221;custom&#8221; custom_background=&#8221;#cd5b1b&#8221; custom_text=&#8221;#ffffff&#8221; align=&#8221;center&#8221; i_icon_fontawesome=&#8221;fas fa-file-download&#8221; add_icon=&#8221;true&#8221; link=&#8221;url:https%3A%2F%2Fsonats-et.com%2Fen%2Fdownloads%2F|title:download&#8221;]\t\t<\/div>\t<\/a><\/div>[\/vc_column_inner][\/vc_row_inner][vc_empty_space height=&#8221;64px&#8221;][vc_column_text]<\/p>\n<p style=\"text-align: center;\"><em>Browse the tabs below to explore in detail principle, methods, advantage and certification of shot peening.<\/em><\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_tta_tabs alignment=&#8221;center&#8221; active_section=&#8221;1&#8243;][vc_tta_section title=&#8221;PRINCIPLE&#8221; tab_id=&#8221;1635412784218-b8cc9401-ae3a&#8221;][vc_row_inner][vc_column_inner][vc_column_text]<\/p>\n<h3>Principle of shot peening, work hardening and cold working process.<\/h3>\n<p>J.Almen discovered shot peening in the 1930s while working for General Motors.<\/p>\n<p>Shot peening is a process used to induce superficial compressive stress, and to modify the mechanical properties of metals. The method consists in striking a surface with projectiles (metal, glass or ceramic beads) at high speed, with sufficient force to create a plastic deformation: each ball acts like a mini-hammer.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<h3>Objective of shot peening<\/h3>\n<p>Shot peening, due to the successive impacts, causes changes in the mechanical properties of the surface. Shot peening is often required for repairs to<strong> fragile areas, to compensate for tensile stresses due to machining<\/strong> and to replace them with compressive stresses.<\/p>\n<p>Shot peening can improve fatigue resistance <strong>from 0 to 1000%. <\/strong>But this depends of:<\/p>\n<ul>\n<li>the part geometry and material<\/li>\n<li>the projectile material,<\/li>\n<li>the projectile quality,<\/li>\n<li>the projectile intensity<\/li>\n<li>it field of action<\/li>\n<\/ul>\n<p>The compressive surface stresses create fatigue resistance and resistance to certain forms of stress corrosion cracking., mains advantages or this work hardening and cold working process.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=&#8221;1\/3&#8243;]<div class=\"ult-content-box-container \" >\t\t<div class=\"ult-content-box\" style=\"background-color:rgba(47,55,135,0.15);box-shadow: px px px px none;padding:15px;margin-top:5px;margin-right:15px;margin-bottom:5px;margin-left:15px;-webkit-transition: all 700ms ease;-moz-transition: all 700ms ease;-ms-transition: all 700ms ease;-o-transition: all 700ms ease;transition: all 700ms ease;\"  data-hover_bg_color=\"rgba(111,110,110,0.15)\"  data-hover_box_shadow=\"none\"    data-normal_margins=\"margin-top:5px;margin-right:15px;margin-bottom:5px;margin-left:15px;\"   data-bg=\"rgba(47,55,135,0.15)\" >[vc_images_carousel images=&#8221;18478,18480,18482,18484,18486,18488,18490&#8243; img_size=&#8221;full&#8221; speed=&#8221;2500&#8243; slides_per_view=&#8221;2&#8243; autoplay=&#8221;yes&#8221; hide_pagination_control=&#8221;yes&#8221; hide_prev_next_buttons=&#8221;yes&#8221; wrap=&#8221;yes&#8221;][vc_btn title=&#8221;Scientific press reviews&#8221; style=&#8221;custom&#8221; custom_background=&#8221;#cd5b1b&#8221; custom_text=&#8221;#ffffff&#8221; align=&#8221;center&#8221; i_icon_fontawesome=&#8221;fas fa-book-reader&#8221; add_icon=&#8221;true&#8221; link=&#8221;url:https%3A%2F%2Fsonats-et.com%2Fen%2Frevue-de-presse%2F|title:Press%20review|target:_blank&#8221;]\t\t<\/div><\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=&#8221;METHODS&#8221; tab_id=&#8221;1635414249024-041b0cda-35b7&#8243;][vc_column_text]Conventional methods of shot peening propel projectiles using <strong>compressed air and centrifugal wheel systems<\/strong>. Other methods include ultrasonic shot peening, wet shot peening and laser peening (which does not use projectiles).<\/p>\n<p>SONATS specialises in ultrasonic shot peening, <a href=\"https:\/\/sonats-et.com\/en\/peening-process\/\">STRESSONIC\u00ae<\/a> technology has matured and has proven its advantages.[\/vc_column_text][vc_video link=&#8221;https:\/\/www.youtube.com\/watch?v=TAEsUYyUtWE&#8221;][vc_empty_space][\/vc_tta_section][vc_tta_section title=&#8221;ADVANTAGES&#8221; tab_id=&#8221;1635412784255-f985eaea-76c0&#8243;][vc_row_inner][vc_column_inner width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<h3>Advantages of shot peening<\/h3>\n<p>SONATS provides<strong> innovative ultrasonic shot peening equipment<\/strong>. The equipment is developed using STRESSONIC\u00ae technology and offers new solutions to overcome the limits of conventional shot peening. This means:<\/p>\n<h4>Increased productivity and quality<\/h4>\n<ul>\n<li>improved fatigue resistance<\/li>\n<li>processing of complex geometry parts<\/li>\n<li>low roughness<\/li>\n<\/ul>\n<h4>Lower costs<\/h4>\n<ul>\n<li>shorter treatment cycle<\/li>\n<li>reduction in the amount of medias, energy and compressed air used<\/li>\n<li>easy integration into the production line<\/li>\n<li>treatment often possible in-situ without dismantling equipment to isolate the work piece<\/li>\n<\/ul>\n<p>Moreover, the use of high quality beads and real-time parameters control ensure repeatability and treatment efficiency.<\/p>\n<p>Ultrasonic shot peening generates an optimal surface condition (roughness) and is generally better than conventional shot peening processes.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=&#8221;1\/3&#8243;][vc_single_image image=&#8221;15283&#8243; img_size=&#8221;400&#215;277&#8243; alignment=&#8221;center&#8221; image_hover=&#8221;&#8221;][vc_column_text]<\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 0.9em;\"><em>Comparison of surface condition (roughness and shot peening post-treatment) on two 7000 series aluminium strips with identical shot peening intensity (12A)<\/em><\/span><\/p>\n<p>[\/vc_column_text][vc_empty_space height=&#8221;15px&#8221;]<div class=\"ult-content-box-container \" >\t<a class=\"ult-content-box-anchor\" href=\"https:\/\/sonats-et.com\/en\/company\/partnerships-rd\/\" title=\"Read scientific and technical publications about ultrasonic shot peening\" >\t\t<div class=\"ult-content-box\" style=\"background-color:rgba(0,157,224,0.15);box-shadow: px px px px none;padding:5px;margin-top:5px;margin-right:15px;margin-bottom:5px;margin-left:15px;-webkit-transition: all 700ms ease;-moz-transition: all 700ms ease;-ms-transition: all 700ms ease;-o-transition: all 700ms ease;transition: all 700ms ease;\"  data-hover_bg_color=\"rgba(205,91,27,0.15)\"  data-hover_box_shadow=\"none\"    data-normal_margins=\"margin-top:5px;margin-right:15px;margin-bottom:5px;margin-left:15px;\"   data-bg=\"rgba(0,157,224,0.15)\" >[vc_column_text]<span style=\"color: #2f3787;\"><strong>TECHNICAL AND SCIENTIFIC PUBLICATION<\/strong><\/span><\/p>\n<p><span style=\"color: #2f3787;\">Consult publications about ultrasonic shot peening process (simulation, improvement of fatigue effects, nanocrystallisation, ceramic shotpeening&#8230;)<\/span>[\/vc_column_text][vc_btn title=&#8221;Download&#8221; style=&#8221;custom&#8221; custom_background=&#8221;#cd5b1b&#8221; custom_text=&#8221;#ffffff&#8221; align=&#8221;center&#8221; i_icon_fontawesome=&#8221;fas fa-file-download&#8221; add_icon=&#8221;true&#8221; link=&#8221;url:https%3A%2F%2Fsonats-et.com%2Fen%2Fdownloads%2F|title:download&#8221;]\t\t<\/div>\t<\/a><\/div>[\/vc_column_inner][\/vc_row_inner][vc_empty_space][vc_single_image image=&#8221;14715&#8243; img_size=&#8221;full&#8221; add_caption=&#8221;yes&#8221; alignment=&#8221;center&#8221; image_hover=&#8221;&#8221;][vc_empty_space][\/vc_tta_section][vc_tta_section title=&#8221;CERTIFICATION&#8221; tab_id=&#8221;1635412849362-10c68176-c993&#8243;][vc_column_text]<\/p>\n<h3>CERTIFICATION<\/h3>\n<p>Our machines are certified according to the following aeronautical recommendations :<\/p>\n<ul>\n<li>SAE\/AMS \u2013 AMS 2430 Shot peening, Automatic<\/li>\n<li>SAE\/AMS \u2013 AMS 2432 Shot peening, computer monitored<\/li>\n<li>SAE\/AME \u2013 AMS 2580 Shot peening, ultrasonically activated<\/li>\n<li>SAE\/AME \u2013 AMS 2585 Shot Peening media \u2013 ultrasonically activated<\/li>\n<li>BNAE-NFL 06 833\u00a0 Aerospace series \u2013 ultrasonic shot peening<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_tta_section][\/vc_tta_tabs][vc_row_inner][vc_column_inner width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<p style=\"text-align: left;\"><span style=\"color: #cd5b1b;\"><strong>Understand everything about ultrasonic shot peening, download our brochure called &#8220;Ultrasonic shot peening process&#8221;.\u00a0<\/strong><\/span><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=&#8221;1\/3&#8243;][vc_btn title=&#8221;I download !&#8221; style=&#8221;custom&#8221; custom_background=&#8221;#cd5b1b&#8221; custom_text=&#8221;#ffffff&#8221; align=&#8221;center&#8221; i_icon_fontawesome=&#8221;fas fa-file-download&#8221; add_icon=&#8221;true&#8221; el_class=&#8221;downloadform&#8221;][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row bg_type=&#8221;bg_color&#8221; bg_override=&#8221;full&#8221; bg_color_value=&#8221;rgba(0,157,224,0.16)&#8221; css=&#8221;.vc_custom_1682000744141{padding-top: 15px !important;}&#8221;][vc_column][vc_column_text]<\/p>\n<h3 style=\"text-align: center;\"><span lang=\"EN-GB\">EQUIPMENT AND SERVICES\u00a0 FOR ULTRASONIC SHOT PEENING<\/span><\/h3>\n<p>[\/vc_column_text][vc_row_inner content_placement=&#8221;top&#8221;][vc_column_inner width=&#8221;1\/3&#8243;][vc_single_image image=&#8221;15280&#8243; img_size=&#8221;300*300&#8243; alignment=&#8221;center&#8221; image_hover=&#8221;&#8221;][vc_column_text]<\/p>\n<p style=\"text-align: center;\"><span style=\"color: #2f3787; font-size: 1.1em;\"><strong>Standard portable equipment,\u00a0<\/strong> for localised shot peening operations.<\/span><\/p>\n<p>[\/vc_column_text][vc_btn title=&#8221;Portable solutions&#8221; style=&#8221;custom&#8221; custom_background=&#8221;#cd5b1b&#8221; custom_text=&#8221;#ffffff&#8221; align=&#8221;center&#8221; i_icon_fontawesome=&#8221;fas fa-angle-right&#8221; add_icon=&#8221;true&#8221; link=&#8221;url:https%3A%2F%2Fsonats-et.com%2Fen%2Fshot-peening%2Fshot-peening-equipment%2F|title:Shot%20peening%20equipment|target:_blank&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;1\/3&#8243;][vc_single_image image=&#8221;15281&#8243; img_size=&#8221;300*300&#8243; alignment=&#8221;center&#8221; image_hover=&#8221;&#8221;][vc_column_text]<\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 1.1em; color: #2f3787;\"><strong>Customized machines<\/strong>, designed according to the specific needs of our customers<\/span><\/p>\n<p>[\/vc_column_text][vc_btn title=&#8221;Automated solutions&#8221; style=&#8221;custom&#8221; custom_background=&#8221;#cd5b1b&#8221; custom_text=&#8221;#ffffff&#8221; align=&#8221;center&#8221; i_icon_fontawesome=&#8221;fas fa-angle-right&#8221; add_icon=&#8221;true&#8221; link=&#8221;url:https%3A%2F%2Fsonats-et.com%2Fen%2Fshot-peening%2Fautomated-shot-peening-equipment%2F|title:Shot%20peening%20equipment|target:_blank&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;1\/3&#8243;][vc_single_image image=&#8221;15282&#8243; img_size=&#8221;300*300&#8243; alignment=&#8221;center&#8221; image_hover=&#8221;&#8221;][vc_column_text]<\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 1.1em; color: #2f3787;\"><strong>Services and sub-contracting<\/strong> on our premises or at your site<\/span><\/p>\n<p>[\/vc_column_text][vc_btn title=&#8221;Services, MRO&#8221; style=&#8221;custom&#8221; custom_background=&#8221;#cd5b1b&#8221; custom_text=&#8221;#ffffff&#8221; align=&#8221;center&#8221; i_icon_fontawesome=&#8221;fas fa-angle-right&#8221; add_icon=&#8221;true&#8221; link=&#8221;url:https%3A%2F%2Fsonats-et.com%2Fen%2Fshot-peening%2Fshot-peening-service%2F|title:Shot%20peening%20equipment|target:_blank&#8221;][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_row_inner equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221;][vc_column_inner width=&#8221;2\/3&#8243;][vc_column_text] What is shot peening &#8211; ultrasonic shot peening ? Our shot peening process is used to improve: Fatigue resistance Resistance to stress corrosion cracking and contact&hellip;<\/p>\n","protected":false},"author":1,"featured_media":12672,"parent":14448,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-14477","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<title>What is shot peening ? 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